>>> user@pc:~/prog$ ls -als
total 8
4 drwxr-xr-x 2 user user 4096 Jun 1 12:24 .
4 drwxr-xr-x 5 user user 4096 Jun 1 12:22 ..
0 -rw-r--r-- 1 user user 0 Jun 1 12:22 '001 #include <stdio.h>'
0 -rw-r--r-- 1 user user 0 Jun 1 12:23 '002 int main(void)'
0 -rw-r--r-- 1 user user 0 Jun 1 12:23 '003 {'
0 -rw-r--r-- 1 user user 0 Jun 1 12:23 '004 printf("Hello world");'
0 -rw-r--r-- 1 user user 0 Jun 1 12:24 '005 return 0;'
0 -rw-r--r-- 1 user user 0 Jun 1 12:24 '006 }'