[Ubuntu] disk usage

현재 디렉토리 혹은 하위의 디렉토리의 disk usage 관련 정보를 shell에서 du 명령을 통해 확인 가능하다.

Usage: du [OPTION]... [FILE]...      or:  du [OPTION]... --files0-from=F Summarize disk usage of the set of FILEs, recursively for directories. Mandatory arguments to long options are mandatory for short options too.   -0, --null            end each output line with NUL, not newline   -a, --all             write counts for all files, not just directories       --apparent-size   print apparent sizes, rather than disk usage; although                           the apparent size is usually smaller, it may be                           larger due to holes in ('sparse') files, internal                           fragmentation, indirect blocks, and the like   -B, --block-size=SIZE  scale sizes by SIZE before printing them; e.g.,                            '-BM' prints sizes in units of 1,048,576 bytes;                            see SIZE format below   -b, --bytes           equivalent to '--apparent-size --block-size=1'   -c, --total           produce a grand total   -D, --dereference-args  dereference only symlinks that are listed on the                           command line   -d, --max-depth=N     print the total for a directory (or file, with --all)                           only if it is N or fewer levels below the command                           line argument;  --max-depth=0 is the same as                           --summarize       --files0-from=F   summarize disk usage of the                           NUL-terminated file names specified in file F;                           if F is -, then read names from standard input   -H                    equivalent to --dereference-args (-D)   -h, --human-readable  print sizes in human readable format (e.g., 1K 234M 2G)       --inodes          list inode usage information instead of block usage   -k                    like --block-size=1K   -L, --dereference     dereference all symbolic links   -l, --count-links     count sizes many times if hard linked   -m                    like --block-size=1M   -P, --no-dereference  don't follow any symbolic links (this is the default)   -S, --separate-dirs   for directories do not include size of subdirectories       --si              like -h, but use powers of 1000 not 1024   -s, --summarize       display only a total for each argument   -t, --threshold=SIZE  exclude entries smaller than SIZE if positive,                           or entries greater than SIZE if negative       --time            show time of the last modification of any file in the                           directory, or any of its subdirectories       --time=WORD       show time as WORD instead of modification time:                           atime, access, use, ctime or status       --time-style=STYLE  show times using STYLE, which can be:                             full-iso, long-iso, iso, or +FORMAT;                             FORMAT is interpreted like in 'date'   -X, --exclude-from=FILE  exclude files that match any pattern in FILE       --exclude=PATTERN    exclude files that match PATTERN   -x, --one-file-system    skip directories on different file systems       --help     display this help and exit       --version  output version information and exit

• ex) 현재 디렉토리의 하위 디렉토리의 용량을 순서대로 조회
• du -sh * | sort -n -r
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