基础开发工具（中）

文章目录

• • 4. 自动化构建-make/Makefile
  • 5. Linux第一个系统程序−进度条

4. 自动化构建-make/Makefile

[gsm@VM–4–3–centos lesson7]$ touch proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 0
–rw–rw–r— 1 gsm gsm 0 Oct 12 15:53 proc.c
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 4
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 16
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 15:55 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ rm proc
[gsm@VM–4–3–centos lesson7]$ ll
total 4
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ touch Makefile
[gsm@VM–4–3–centos lesson7]$ ll
total 4
–rw–rw–r— 1 gsm gsm 0 Oct 12 15:56 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 32 Oct 12 15:58 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 32 Oct 12 15:58 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 15:59 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ rm proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 32 Oct 12 15:58 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:14 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
gcc –o proc proc.c
.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:14 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:15 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:14 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ make proc
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:14 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:22 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:14 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
.PHONY:clean
clean:
rm –f proc
proc:proc.c
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make proc
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:24 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:24 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 94 Oct 12 16:27 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:24 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ rm proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 94 Oct 12 16:27 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
echo "hahaha"
#gcc –o proc proc.c
.PHONY:clean
clean:
echo "hehe"
#rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
echo "hahaha"
hahaha
#gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
echo "hahaha"
.PHONY:clean
clean:
echo "hehe"
#rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
echo "hahaha"
hahaha
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 73 Oct 12 16:29 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 15:54 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ make
echo "hahaha"
hahaha
echo "hahaha"
hahaha
echo "hahaha"
hahaha
echo "hahaha"
hahaha
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
@echo "hahaha"
@echo "hahaha"
@echo "hahaha"
@echo "hahaha"
.PHONY:clean
clean:
echo "hehe"
#rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
hahaha
hahaha
hahaha
hahaha
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
@echo "开始编译…"
@gcc –o proc proc.c
@echo "结束编译…"
.PHONY:clean
clean:
@echo "清理完成…"
@rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
开始编译...
结束编译...
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>

int main()
{
printf("hello Linux!\\n")
return 0;
}
[gsm@VM–4–3–centos lesson7]$ make clean
清理完成...
[gsm@VM–4–3–centos lesson7]$ make
开始编译...
proc.c: In function ‘main’:
proc.c:6:5: error: expected ‘;’ before ‘return’
return 0;
^
make: *** [proc] Error 1
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:35 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ make
开始编译...
结束编译...
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:35 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:39 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ make clean
清理完成...
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:35 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ cp Makefile backup1012
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:41 backup1012
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:35 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
gcc –o proc proc.c
.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rw–rw–r— 1 gsm gsm 141 Oct 12 16:41 backup1012
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:42 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:42 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ mv backup1012 ..
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:42 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:42 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:42 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 64 Oct 12 16:48 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 16:49 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
gcc –o proc proc.c

#.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
.PHONY:proc
proc:proc.c
gcc –o proc proc.c

#.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 78 Oct 12 17:00 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:01 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 78 Oct 12 17:00 Makefile
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
#.PHONY:proc
proc:proc.c
gcc –o proc proc.c

#.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:06 proc
–rw–rw–r— 1 gsm gsm 79 Oct 12 16:39 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>

int main()
{
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
return 0;
}
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:07 proc
–rw–rw–r— 1 gsm gsm 169 Oct 12 17:07 proc.c
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 169 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0664/–rw–rw–r—) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:07:11.741037892 +0800
Modify: 2025–10–12 17:07:11.739037901 +0800
Change: 2025–10–12 17:07:11.739037901 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:07 proc
–rw–rw–r— 1 gsm gsm 169 Oct 12 17:07 proc.c
[gsm@VM–4–3–centos lesson7]$ chmod o–r proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:07 proc
–rw–rw—— 1 gsm gsm 169 Oct 12 17:07 proc.c
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 169 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0660/–rw–rw——) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:07:11.741037892 +0800
Modify: 2025–10–12 17:07:11.739037901 +0800
Change: 2025–10–12 17:14:13.525097070 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>

int main()
{
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
return 0;
}
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 259 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0660/–rw–rw——) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:15:26.229763190 +0800
Modify: 2025–10–12 17:15:26.226763204 +0800
Change: 2025–10–12 17:15:26.226763204 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:07 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:15 proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 259 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0660/–rw–rw——) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:15:26.229763190 +0800
Modify: 2025–10–12 17:15:26.226763204 +0800
Change: 2025–10–12 17:15:26.226763204 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ stat proc
File: ‘proc’
Size: 8360 Blocks: 24 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052395 Links: 1
Access: (0775/–rwxrwxr–x) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:23:44.872478158 +0800
Modify: 2025–10–12 17:23:44.147481475 +0800
Change: 2025–10–12 17:23:44.147481475 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ touch –m proc.c
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 259 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0660/–rw–rw——) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:25:46.871920321 +0800
Modify: 2025–10–12 17:25:45.957924498 +0800
Change: 2025–10–12 17:25:45.957924498 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ stat proc
File: ‘proc’
Size: 8360 Blocks: 24 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052395 Links: 1
Access: (0775/–rwxrwxr–x) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:26:32.865710134 +0800
Modify: 2025–10–12 17:26:32.422712158 +0800
Change: 2025–10–12 17:26:32.422712158 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ make
make: `proc' is up to date.
[gsm@VM–4–3–centos lesson7]$ touch proc.c
[gsm@VM–4–3–centos lesson7]$ stat proc.c
File: ‘proc.c’
Size: 259 Blocks: 8 IO Block: 4096 regular file
Device: fd01h/64769dInode: 1052393 Links: 1
Access: (0660/–rw–rw——) Uid: ( 1001/ gsm) Gid: ( 1001/ gsm)
Access: 2025–10–12 17:27:22.865481713 +0800
Modify: 2025–10–12 17:27:21.185489386 +0800
Change: 2025–10–12 17:27:21.185489386 +0800
Birth: –
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 79 Oct 12 17:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 17:27 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
.PHONY:proc
proc:proc.c
gcc –o proc proc.c

#.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –o proc proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 78 Oct 12 17:30 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.c
gcc –o proc proc.c

.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 65 Oct 12 17:56 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ cp Makefile backup20251012_2
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 65 Oct 12 17:57 backup20251012_2
–rw–rw–r— 1 gsm gsm 65 Oct 12 17:56 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ mv backup20251012_2 ..
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 65 Oct 12 17:56 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.o
gcc proc.o –o proc
proc.o:proc.s
gcc –c proc.s –o proc.o
proc.s:proc.i
gcc –S proc.i –o proc.s
proc.i:proc.c
gcc –E proc.c –o proc.i

.PHONY:clean
clean:
rm –f proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –E proc.c –o proc.i
gcc –S proc.i –o proc.s
gcc –c proc.s –o proc.o
gcc proc.o –o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 48
–rw–rw–r— 1 gsm gsm 183 Oct 12 18:05 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 18:05 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
–rw–rw–r— 1 gsm gsm 17057 Oct 12 18:05 proc.i
–rw–rw–r— 1 gsm gsm 1848 Oct 12 18:05 proc.o
–rw–rw–r— 1 gsm gsm 622 Oct 12 18:05 proc.s
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.o
gcc proc.o –o proc
proc.o:proc.s
gcc –c proc.s –o proc.o
proc.s:proc.i
gcc –S proc.i –o proc.s
proc.i:proc.c
gcc –E proc.c –o proc.i

.PHONY:clean
clean:
rm –f proc.i proc.s proc.o proc
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc.i proc.s proc.o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 204 Oct 12 18:07 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.o
gcc proc.o –o proc
proc.o:proc.c
gcc –c proc.c

.PHONY:clean
clean:
rm –f proc.o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 102 Oct 12 18:17 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ make
gcc –c proc.c
gcc proc.o –o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rw–rw–r— 1 gsm gsm 102 Oct 12 18:17 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 18:17 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
–rw–rw–r— 1 gsm gsm 1848 Oct 12 18:17 proc.o
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc.o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 102 Oct 12 18:17 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
proc:proc.o
gcc proc.o –o proc
%.o:%.c
gcc –c $<

.PHONY:clean
clean:
rm –f proc.o proc
[gsm@VM–4–3–centos lesson7]$ make
gcc –c proc.c
gcc proc.o –o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rw–rw–r— 1 gsm gsm 92 Oct 12 18:20 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 18:22 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
–rw–rw–r— 1 gsm gsm 1848 Oct 12 18:22 proc.o
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc.o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 92 Oct 12 18:20 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
bin=proc
src=proc.o

$(bin):$(src)
gcc $^ –o $@
%.o:%.c
gcc –c $<

.PHONY:clean
clean:
rm –f proc.o $(bin)
[gsm@VM–4–3–centos lesson7]$ make
gcc –c proc.c
gcc proc.o –o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rw–rw–r— 1 gsm gsm 111 Oct 12 19:47 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 19:47 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
–rw–rw–r— 1 gsm gsm 1848 Oct 12 19:47 proc.o
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc.o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 111 Oct 12 19:47 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ cat Makefile
bin=hello
src=proc.o

$(bin):$(src)
gcc $^ –o $@
%.o:%.c
gcc –c $<

.PHONY:clean
clean:
rm –f proc.o $(bin)
[gsm@VM–4–3–centos lesson7]$ make
gcc –c proc.c
gcc proc.o –o hello
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 19:48 hello
–rw–rw–r— 1 gsm gsm 112 Oct 12 19:48 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
–rw–rw–r— 1 gsm gsm 1848 Oct 12 19:48 proc.o
[gsm@VM–4–3–centos lesson7]$ ./hello
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc.o hello
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 112 Oct 12 19:48 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ cp Makefile backup20251012_2
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 112 Oct 12 19:50 backup20251012_2
–rw–rw–r— 1 gsm gsm 112 Oct 12 19:48 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ mv backup20251012_2 ..
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 112 Oct 12 19:48 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
bin=proc
src=proc.c

$(bin):$(src)
gcc $^ –o $@

.PHONY:clean
clean:
rm –f $(bin)
[gsm@VM–4–3–centos lesson7]$ make
gcc proc.c –o proc
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 84 Oct 12 20:06 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 20:07 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 84 Oct 12 20:06 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ touch code.c
[gsm@VM–4–3–centos lesson7]$ ll
total 8
–rw–rw–r— 1 gsm gsm 0 Oct 12 20:13 code.c
–rw–rw–r— 1 gsm gsm 84 Oct 12 20:06 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c > code.c
[gsm@VM–4–3–centos lesson7]$ vim code.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>

int main()
{
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
printf("hello Linux!\\n");
return 0;
}
[gsm@VM–4–3–centos lesson7]$ cat code.c
#include <stdio.h>

int main()
{
printf("hello code!\\n");
printf("hello code!\\n");
printf("hello code!\\n");
printf("hello code!\\n");
printf("hello code!\\n");
printf("hello code!\\n");
return 0;
}
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 84 Oct 12 20:06 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
bin1=proc
src1=proc.c

bin2=code
src2=code.c

.PHONY:all
all:$(bin1) $(bin2)

$(bin1):$(src1)
gcc $^ –o $@

$(bin2):$(src2)
gcc $^ –o $@

.PHONY:clean
clean:
rm –f $(bin1) $(bin2)
[gsm@VM–4–3–centos lesson7]$ make
gcc proc.c –o proc
gcc code.c –o code
[gsm@VM–4–3–centos lesson7]$ ll
total 36
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 20:28 code
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 184 Oct 12 20:28 Makefile
–rwxrwxr–x 1 gsm gsm 8360 Oct 12 20:28 proc
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
hello Linux!
[gsm@VM–4–3–centos lesson7]$ ./code
hello code!
hello code!
hello code!
hello code!
hello code!
hello code!
[gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc code
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 184 Oct 12 20:28 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c

5. Linux第一个系统程序−进度条

[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 184 Oct 12 20:28 Makefile
–rw–rw—— 1 gsm gsm 259 Oct 12 17:27 proc.c
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>
#include <unistd.h>

int main()
{
printf("hello Linux!\\n");

sleep(2);
return 0;
}
[gsm@VM–4–3–centos lesson7]$ man 3 sleep
[gsm@VM–4–3–centos lesson7]$ vim Makefile
[gsm@VM–4–3–centos lesson7]$ cat Makefile
bin1=proc
src1=proc.c

#bin2=code
#src2=code.c

#.PHONY:all
#all:$(bin1) $(bin2)

$(bin1):$(src1)
gcc $^ –o $@

#$(bin2):$(src2)
#gcc $^ –o $@

.PHONY:clean
clean:
rm –f $(bin1)
#rm –f $(bin1) $(bin2)
[gsm@VM–4–3–centos lesson7]$ make
gcc proc.c –o proc
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux!
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>
#include <unistd.h>

int main()
{
printf("hello Linux!");

sleep(2);
return 0;
}
[gsm@VM–4–3–centos lesson7]$ make
gcc proc.c –o proc
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux![gsm@VM–4–3–centos lesson7]$ man fflush
[gsm@VM–4–3–centos lesson7]$ man stdin
[gsm@VM–4–3–centos lesson7]$ ll
total 24
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 206 Oct 12 21:01 Makefile
–rwxrwxr–x 1 gsm gsm 8408 Oct 12 21:03 proc
–rw–rw—— 1 gsm gsm 112 Oct 12 21:03 proc.c
[gsm@VM–4–3–centos lesson7]$ vim proc.c
[gsm@VM–4–3–centos lesson7]$ cat proc.c
#include <stdio.h>
#include <unistd.h>

int main()
{
printf("hello Linux!");
fflush(stdout);
sleep(2);
return 0;
}
[gsm@VM–4–3–centos lesson7]$ make
gcc proc.c –o proc
[gsm@VM–4–3–centos lesson7]$ ./proc
hello Linux![gsm@VM–4–3–centos lesson7]$ make clean
rm –f proc
#rm –f proc
[gsm@VM–4–3–centos lesson7]$ ll
total 12
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
–rw–rw–r— 1 gsm gsm 206 Oct 12 21:01 Makefile
–rw–rw—— 1 gsm gsm 131 Oct 12 21:29 proc.c

[gsm@VM–4–3–centos lesson7]$ mkdir count
[gsm@VM–4–3–centos lesson7]$ ll
total 16
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
drwxrwxr–x 2 gsm gsm 4096 Oct 12 21:32 count
–rw–rw–r— 1 gsm gsm 206 Oct 12 21:01 Makefile
–rw–rw—— 1 gsm gsm 131 Oct 12 21:29 proc.c
[gsm@VM–4–3–centos lesson7]$ cd count/
[gsm@VM–4–3–centos count]$ ll
total 0
[gsm@VM–4–3–centos count]$ touch Count.c
[gsm@VM–4–3–centos count]$ ll
total 0
–rw–rw–r— 1 gsm gsm 0 Oct 12 21:33 Count.c
[gsm@VM–4–3–centos count]$ ls > Makefile
[gsm@VM–4–3–centos count]$ ll
total 4
–rw–rw–r— 1 gsm gsm 0 Oct 12 21:33 Count.c
–rw–rw–r— 1 gsm gsm 17 Oct 12 21:33 Makefile
[gsm@VM–4–3–centos count]$ vim Makefile
[gsm@VM–4–3–centos count]$ ll
total 4
–rw–rw–r— 1 gsm gsm 0 Oct 12 21:33 Count.c
–rw–rw–r— 1 gsm gsm 61 Oct 12 21:36 Makefile
[gsm@VM–4–3–centos count]$ cat Makefile
Count:Count.c
gcc –o $@ $^
.PHONY:clean
clean:
rm –f Count
[gsm@VM–4–3–centos count]$ vim Count.c
[gsm@VM–4–3–centos count]$ cat Count.c
#include <stdio.h>
#include <unistd.h>

int main()
{
int count = 9;

while (count >= 0)
{
printf("%d\\n", count);
count—;
sleep(1);
}

return 0;
}
[gsm@VM–4–3–centos count]$ make
gcc –o Count Count.c
[gsm@VM–4–3–centos count]$ ll
total 20
–rwxrwxr–x 1 gsm gsm 8408 Oct 12 21:41 Count
–rw–rw–r— 1 gsm gsm 199 Oct 12 21:40 Count.c
–rw–rw–r— 1 gsm gsm 61 Oct 12 21:36 Makefile
[gsm@VM–4–3–centos count]$ ./Count
9
8
7
6
5
4
3
2
1
0
[gsm@VM–4–3–centos count]$ make clean
rm –f Count
[gsm@VM–4–3–centos count]$ ll
total 8
–rw–rw–r— 1 gsm gsm 199 Oct 12 21:40 Count.c
–rw–rw–r— 1 gsm gsm 61 Oct 12 21:36 Makefile
[gsm@VM–4–3–centos count]$ vim Count.c
[gsm@VM–4–3–centos count]$ cat Count.c
#include <stdio.h>
#include <unistd.h>

int main()
{
int count = 9;

while (count >= 0)
{
printf("%d\\r", count);// \\r回车，但是没有换行，也就没有刷新
fflush(stdout);
count—;
sleep(1);
}

printf("\\r\\n");

return 0;
}
[gsm@VM–4–3–centos count]$ make
gcc –o Count Count.c
[gsm@VM–4–3–centos count]$ ./Count
0
[gsm@VM–4–3–centos count]$ make clean
rm –f Count
[gsm@VM–4–3–centos count]$ vim Count.c
[gsm@VM–4–3–centos count]$ cat Count.c
#include <stdio.h>
#include <unistd.h>

int main()
{
int count = 10;

while (count >= 0)
{
printf("%-2d\\r", count);// \\r回车，但是没有换行，也就没有刷新
fflush(stdout);
count—;
sleep(1);
}

printf("\\r\\n");

return 0;
}
[gsm@VM–4–3–centos count]$ make
gcc –o Count Count.c
[gsm@VM–4–3–centos count]$ ./Count
0
[gsm@VM–4–3–centos count]$ make clean
rm –f Count
[gsm@VM–4–3–centos count]$ ll
total 8
–rw–rw–r— 1 gsm gsm 300 Oct 12 22:17 Count.c
–rw–rw–r— 1 gsm gsm 61 Oct 12 21:36 Makefile

[gsm@VM–4–3–centos lesson7]$ ll
total 16
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
drwxrwxr–x 2 gsm gsm 4096 Oct 12 22:17 count
–rw–rw–r— 1 gsm gsm 206 Oct 12 21:01 Makefile
–rw–rw—— 1 gsm gsm 131 Oct 12 21:29 proc.c
[gsm@VM–4–3–centos lesson7]$ mkdir processbar
[gsm@VM–4–3–centos lesson7]$ ll
total 20
–rw–rw–r— 1 gsm gsm 223 Oct 12 20:15 code.c
drwxrwxr–x 2 gsm gsm 4096 Oct 12 22:17 count
–rw–rw–r— 1 gsm gsm 206 Oct 12 21:01 Makefile
–rw–rw—— 1 gsm gsm 131 Oct 12 21:29 proc.c
drwxrwxr–x 2 gsm gsm 4096 Oct 12 22:21 processbar
[gsm@VM–4–3–centos lesson7]$ cd processbar/
[gsm@VM–4–3–centos processbar]$ ll
total 0
[gsm@VM–4–3–centos processbar]$ pwd
/home/gsm/112/lesson7/processbar
[gsm@VM–4–3–centos processbar]$ touch process.c
[gsm@VM–4–3–centos processbar]$ touch process.h
[gsm@VM–4–3–centos processbar]$ touch main.c
[gsm@VM–4–3–centos processbar]$ ll
total 0
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 main.c
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 process.c
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 process.h
[gsm@VM–4–3–centos processbar]$ cp ../count/Makefile .
[gsm@VM–4–3–centos processbar]$ ll
total 4
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 main.c
–rw–rw–r— 1 gsm gsm 61 Oct 12 22:37 Makefile
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 process.c
–rw–rw–r— 1 gsm gsm 0 Oct 12 22:36 process.h
[gsm@VM–4–3–centos processbar]$ vim Makefile
[gsm@VM–4–3–centos processbar]$ cat Makefile
process:main.c process.c
gcc –o $@ $^
.PHONY:clean
clean:
rm –f process
[gsm@VM–4–3–centos processbar]$ vim process.h
[gsm@VM–4–3–centos processbar]$ vim main.c
[gsm@VM–4–3–centos processbar]$ cat process.h
#pragma once

//version

void Process();
[gsm@VM–4–3–centos processbar]$ cat process.c
#include "process.h"
#include <stdio.h>

void Process()
{
printf("hello Process\\n");
}
[gsm@VM–4–3–centos processbar]$ cat main.c
#include <stdio.h>
#include "process.h"

int main()
{
Process();
printf("hello process\\n");

return 0;
}
[gsm@VM–4–3–centos processbar]$ make
gcc –o process main.c process.c
[gsm@VM–4–3–centos processbar]$ ll
total 28
–rw–rw–r— 1 gsm gsm 117 Oct 12 22:49 main.c
–rw–rw–r— 1 gsm gsm 74 Oct 12 22:39 Makefile
–rwxrwxr–x 1 gsm gsm 8424 Oct 12 22:52 process
–rw–rw–r— 1 gsm gsm 91 Oct 12 22:47 process.c
–rw–rw–r— 1 gsm gsm 41 Oct 12 22:47 process.h
[gsm@VM–4–3–centos processbar]$ ./process
hello Process
hello process
[gsm@VM–4–3–centos processbar]$ make clean
rm –f process
[gsm@VM–4–3–centos processbar]$ ll
total 16
–rw–rw–r— 1 gsm gsm 117 Oct 12 22:49 main.c
–rw–rw–r— 1 gsm gsm 74 Oct 12 22:39 Makefile
–rw–rw–r— 1 gsm gsm 91 Oct 12 22:47 process.c
–rw–rw–r— 1 gsm gsm 41 Oct 12 22:47 process.h
[gsm@VM–4–3–centos processbar]$ man 3 usleep
[gsm@VM–4–3–centos processbar]$ vim main.c
[gsm@VM–4–3–centos processbar]$ vim process.c
[gsm@VM–4–3–centos processbar]$ cat process.h
#pragma once

//version

void Process();
[gsm@VM–4–3–centos processbar]$ cat process.c
#include "process.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define NUM 101
#define STYLE '#'

// version 1
void Process()
{
const char* lable = "|/-\\\\";
int len = strlen(lable);
char bar[NUM];
memset(bar, '\\0', sizeof(bar));
int cnt = 0;

while (cnt <= 100)
{
printf("[%-100s][%d%%][%c]\\r", bar, cnt, lable[cnt % len]);
fflush(stdout);
bar[cnt] = STYLE;
cnt++;

usleep(50000);
}

printf("\\r\\n");
}
[gsm@VM–4–3–centos processbar]$ cat main.c
#include <stdio.h>
#include "process.h"

int main()
{
Process();

return 0;
}
[gsm@VM–4–3–centos processbar]$ make
gcc –o process main.c process.c
[gsm@VM–4–3–centos processbar]$ ./process
[####################################################################################################][100%][|]
[gsm@VM–4–3–centos processbar]$ make clean
rm –f process
[gsm@VM–4–3–centos processbar]$ ll
total 16
–rw–rw–r— 1 gsm gsm 86 Oct 13 15:50 main.c
–rw–rw–r— 1 gsm gsm 74 Oct 12 22:39 Makefile
–rw–rw–r— 1 gsm gsm 496 Oct 13 16:41 process.c
–rw–rw–r— 1 gsm gsm 41 Oct 12 22:47 process.h
[gsm@VM–4–3–centos processbar]$ vim process.c
[gsm@VM–4–3–centos processbar]$ cat process.h
#pragma once

//version

void Process();
[gsm@VM–4–3–centos processbar]$ cat process.c
#include "process.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define NUM 101
#define STYLE '='

// version 1
void Process()
{
const char* lable = "|/-\\\\";
int len = strlen(lable);
char bar[NUM];
memset(bar, '\\0', sizeof(bar));
int cnt = 0;

while (cnt <= 100)
{
printf("[%-100s][%d%%][%c]\\r", bar, cnt, lable[cnt % len]);
fflush(stdout);
bar[cnt] = STYLE;
cnt++;

if (cnt + 1 == NUM)
{
printf("[%-100s][%d%%][%c]\\r", bar, cnt, lable[cnt % len]);
break;
}

bar[cnt] = '>';

usleep(50000);
}

printf("\\r\\n");
}
[gsm@VM–4–3–centos processbar]$ cat main.c
#include <stdio.h>
#include "process.h"

int main()
{
Process();

return 0;
}
[gsm@VM–4–3–centos processbar]$ make
gcc –o process main.c process.c
[gsm@VM–4–3–centos processbar]$ ./process
[====================================================================================================][100%][|]
[gsm@VM–4–3–centos processbar]$ make clean
rm –f process
[gsm@VM–4–3–centos processbar]$ ll
total 16
–rw–rw–r— 1 gsm gsm 86 Oct 13 15:50 main.c
–rw–rw–r— 1 gsm gsm 74 Oct 12 22:39 Makefile
–rw–rw–r— 1 gsm gsm 661 Oct 13 17:33 process.c
–rw–rw–r— 1 gsm gsm 41 Oct 12 22:47 process.h
[gsm@VM–4–3–centos processbar]$ cp process.c process–backup20251013.c
[gsm@VM–4–3–centos processbar]$ ll
total 20
–rw–rw–r— 1 gsm gsm 86 Oct 13 15:50 main.c
–rw–rw–r— 1 gsm gsm 74 Oct 12 22:39 Makefile
–rw–rw–r— 1 gsm gsm 661 Oct 13 17:34 process–backup20251013.c
–rw–rw–r— 1 gsm gsm 661 Oct 13 17:33 process.c
–rw–rw–r— 1 gsm gsm 41 Oct 12 22:47 process.h
[gsm@VM–4–3–centos processbar]$ vim process.c
[gsm@VM–4–3–centos processbar]$ cat process.h
#pragma once

//version

void Process();
[gsm@VM–4–3–centos processbar]$ cat process.c
#include "process.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define NUM 101
#define STYLE1 '>'
#define STYLE2 '='

// version 1
void Process()
{
const char* lable = "|/-\\\\";
int len = strlen(lable);
char bar[NUM];
memset(bar, '\\0', sizeof(bar));
int cnt = 0;

while (cnt < 100)
{
bar[cnt] = STYLE1;
printf("[%-100s][%d%%][%c]\\r", bar, cnt + 1, lable[(cnt + 1) % len]);
fflush(stdout);
usleep(100000);
bar[cnt] = STYLE2;
printf("[%-100s][%d%%][%c]\\r", bar, cnt + 1, lable[(cnt + 1) % len]);
fflush(stdout);
cnt++;