-hl 参数¶
ls -hl
-h, --human-readable
with -l, print sizes in human readable format (e.g., 1K 234M 2G)
$ df -hl
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 92G 20G 68G 23% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 2.9G 4.0K 2.9G 1% /dev
tmpfs 584M 1.3M 582M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 2.9G 21M 2.9G 1% /run/shm
none 100M 32K 100M 1% /run/user
man命令比help更可阅读¶
shell: count files in dir¶
ls -1 | wc -l
shell: size of dir¶
du -hl dir/
Automatically Create Recursive Directory¶
mkdir -p exist/notexist