前言
du 、df 、sort 常常一起结合使用,我经常使用它进行文件清理之前的分析之中。
df : display free disk space
- man df
The following options are available: -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte in order to reduce the number of digits to three or less using base 2 for sizes. -m Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environment. SEE ALSO lsvfs(1), quota(1), fstatfs(2), getfsstat(2), statfs(2), getmntinfo(3), compat(5), fstab(5), mount(8), quot(8)
- df -h
<!-- -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G) -->
iPhone:/private/var/MobileAsset/Assets root# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/disk0s1s1 3.8G 3.5G 278M 93% /
devfs 52K 52K 0 100% /dev
/dev/disk0s1s2 26G 2.0G 24G 8% /private/var
/dev/disk4 236M 69M 167M 30% /Developer
这个参数和sort 的-h 参数意义是一样的
- df -m
iPhone:/var/Keychains root# df -m
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/disk0s1s1 3644 3397 211 95% /
devfs 1 1 0 100% /dev
/dev/disk0s1s2 26597 2058 24540 8% /private/var
/dev/disk4 236 69 167 30% /Developer
du: display disk usage statistics
- man du
The options are as follows: -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. -s Display an entry for each specified file. (Equivalent to -d 0)
- which are the larger caches.
In the terminal run du -s /Library/Caches/* | sort -n
- du -sh *
iPhone:~/Library/Caches root# du -sh * |sort -hr
87M com.apple.coresymbolicationd
46M com.apple.pipelined
20M locationd
1.2M Backup
see also
- df(1), fts(3), compat(5), symlink(7), quot(8)
- Terminal
An Apple app that comes with macOS.
Terminal provides a window with a command line where you can type commands for the computer’s operating system to perform.
Terminal is a type of program called a “terminal emulator” commonly found on UNIX-based computers.
/Users/devzkn/bin/knpost du display disk usage statistics -t Terminal #原来""的参数，需要自己加上""
