rmdir

Remove directory, this command will only work if the folders are empty. 移除一个空文件夹
Syntax
      rmdir [options]... folder(s)...
Options
      --ignore-fail-on-non-empty
                  Ignore each failure that is solely because the
                  directory is non-empty.
  -p, --parents   Remove explicit parent directories if being emptied

      --verbose   Output a diagnostic for every directory processed

      --help      Display help and exit

      --version   Output version information and exit

Example
$ rmdir myfolder
Before removing directories with a wildcard, it's wise to list them first:
$ ls -d britney*/


rm

Remove files

rm -rf

remove non-empty folder（rm -rf will recursively remove folders and their contents）

ls -al
 
List information about files

tar

压缩，解压文件命令

把其他路径下的压缩文件解压到当前文件夹：

tar zxvf  / usr / local / xxx.tar.gz

patch –p0 < patchfile.patch