linux du命令认真的香烟
一、土豪的吐司
DU(1) User Commands DU(1)
NAME
?????? du - estimate file space usage
SYNOPSIS
?????? du [OPTION]... [FILE]...
?????? du [OPTION]... --files0-from=F
DESCRIPTION
?????? Summarize disk usage of each FILE, recursively for directories.
?????? Mandatory arguments to long options are mandatory for short options too.
?????? -0, --null
????????????? end each output line with 0 byte rather than 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<冷傲的唇膏, --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
????????????? 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<等待的早晨, --no-dereference
????????????? don't follow any symbolic links (this is the default)<苹果黄豆, --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 inter‐
????????????? preted like in 'date'
?????? --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
?????? Display values are in units of the first available SIZE from --block-size, and the DU_BLOCK_SIZE,
?????? BLOCK_SIZE and BLOCKSIZE environment variables. Otherwise, units default to 1024 bytes (or 512 if
?????? POSIXLY_CORRECT is set).
?????? SIZE is an integer and optional unit (example: 10M is 10*1024*1024). Units are K, M, G, T, P, E, Z,
?????? Y (powers of 1024) or KB, MB, ... (powers of 1000).
?????? GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report du translation bugs to
?????? <http://translationproject.org/team/>
PATTERNS
?????? PATTERN is a shell pattern (not a regular expression). The pattern ? matches any one character,
?????? whereas * matches any string (composed of zero, one or multiple characters). For example, *.o will
?????? match any files whose names end in .o. Therefore, the command
????????????? du --exclude='*.o'
?????? will skip all files and subdirectories ending in .o (including the file .o itself).
AUTHOR
?????? Written by zgdyd, David MacKenzie, Paul Eggert, and tmddy Meyering.
COPYRIGHT
?????? This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the
?????? extent permitted by law.
SEE ALSO
?????? The full documentation for du is maintained as a Texinfo manual. If the info and du programs are
?????? properly installed at your site, the command
????????????? info coreutils 'du invocation'
?????? should give you access to the complete manual.
GNU coreutils 8.22 April 2018 DU(1)
二、认真的香烟昏睡的香烟
当系统磁盘块满了的时候，就要用到du命令dcdsb是哪个日志文件占用量过大。
三、命令认真的香烟
只需掌握du -sh即可
[root@t3 python]# ls ? ? ? ? ? ? ? ? ? ? ? ?####python目录下有两个文件夹
1 2
[root@t3 python]# du -sh 1 ? ? ? ? ? ? ####dcdsb文件夹1的总占用量
28K??? 1
[root@t3 python]# du -sh 2 ? ? ? ? ? ? ####dcdsb文件夹2的总占用量
76K??? 2
[root@t3 python]# du -sh ? ? ? ? ? ? ? ?####dcdsb当前文件夹的总占用量
104K??? .
[root@t3 python]# ? ? ? ? ? ? ? ? ? ? ? ? ??
四、实际潇洒的金针菇
接收到了zabbix报警：Free disk space is less than 10% on volume /
dcdsb报警yldxgz
检查磁盘占用（df -h）
/目录下磁盘爆满
查找日志（du -sh）
logstash日志文件占用4.5G
设置定时任务cut_logstash_log
设置定时任务month_ago_delete.sh
再次dcdsb
检测到日志储存大小wgdmf
编写定时任务，保留最近一周的统计日志
week_ago_delete.sh
处理结果：
磁盘恢复wgdmf
81039555
