Linux基础——文件或目录或内容查找方法（awk/sort/ls/find）

一、awk升序降序使用

 

二、sort升序降序使用

问题：主机/root目录被文件占满，导致系统空间不足触发告警

# 检查/root目录的目录及文件大小，sort按照递归方法降序打印前10条记录(显示当前目录及文件大小)
du -sh ./*|sort -h -r | head -10

# 检查/root目录、子目录（3层）、文件大小，按照sort递归降序打印前10行
du --max-depth=3 -h /root/|sort -h -r | head -10

三、ls查找最新文件或目录

1、参数“-t”参数newest first查看最新创建的目录或文件

[root@harbor strace]# ls --help  | grep time
  -c                         with -lt: sort by, and show, ctime (time of last
                               with -l: show ctime and sort by name;
                               otherwise: sort by ctime, newest first
      --full-time            like -l --time-style=full-iso
                               time (-t), version (-v), extension (-X)
      --time=WORD            change the default of using modification times;
                               access time (-u): atime, access, use;
                               change time (-c): ctime, status;
                               birth time: birth, creation;
                             with -l, WORD determines which time to show;
                             with --sort=time, sort by WORD (newest first)
      --time-style=TIME_STYLE  time/date format with -l; see TIME_STYLE below
  -t                         sort by time, newest first; see --time
  -u                         with -lt: sort by, and show, access time;
                               with -l: show access time and sort by name;
                               otherwise: sort by access time, newest first

 

[root@harbor ~]# ls -alt | head
total 85604
drwxr-xr-x  15 root    root        4096 Dec 10 10:42 strace
dr-xr-x---. 47 root    root        4096 Dec 10 10:42 .
-rw-------   1 root    root         104 Dec 10 09:41 .Xauthority
-rw-------   1 root    root       23911 Dec  9 14:50 .bash_history
drwx------  15 root    root        4096 Dec  9 14:18 .config
dr-xr-xr-x. 22 root    root        4096 Dec  9 14:05 ..
drwx------   8 root    root        4096 Dec  9 13:58 .cache
-rw-------   1 root    root       14480 Dec  9 13:58 .viminfo
drwxr-xr-x   3 root    root        4096 Dec  9 11:16 tiptop

四、find查找文件或目录

1、查看范围1M~50M之间权限是0111的文件

find /root -size +1M  -size -50M  -perm 0755 |  xargs ls -lh

 2、查找关键字ssh的路径

find / -name ssh  2>&1 | grep -v "Permission denied"

 3、查找目录、清空子cgroups层级数、删除子cgroups

find /sys/fs/cgroup/memory -type d -name "*test*" \
  -exec sh -c 'echo 0 > $1/memory.force_empty && rmdir $1' _ {} \;

  4、只查找目录所有文件

find /sys/fs/cgroup/memory -type d

 5、查看cgroup.procs文件统计数量

find /sys/fs/cgroup -name "cgroup.procs" -exec wc -l {} + | tail -1