常见的linux命令31个(常见的）

1 ls 2 cd 3 pwd 4 mkdir
5 rm 6 rmdir 7 mv 8 cp
9 cat 10 more 11 less
12 head 13 tail 14 which 15 whereis
16 locate 17 find 18 chmod 19 tar
20 chown 21 df 22 du 23 ln
24 date 25 cal 26 grep
27 wc 28 ps 29 top
30 kill 31 free