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Locate​

结合 updatedb 命令 (该命令一般自动 1 天/次).

Type​

Indicate how a command name is interpreted.

Apropos​

Display a list of appropriate commands.

whereis​

whatis​

which​

Find​

find [搜索路径] [可选参数] [文件名](可加""):

  • -name.
  • -iname: 不区分大小写.
  • -user: user_name 按照所有者搜索.
  • -nouser: 搜索没有所有者的文件.
  • -atime(文件访问时间)/-ctime(改变文件属性)/-mtime(改变文件内容): -10(十天内)/10(十天当天)/+10(十天前).
  • -size: 文件大小, -25k(小于 25k)/25M(25M)/+25G(大于 25G).
  • -inum: inode_number.
  • -a/-o: 逻辑与/逻辑或 (左右两端搜索条件).
  • -exec system_command_list {} ;: 对搜索结果执行操作.
  • -ok system_command_list {} ;: 对搜索结果执行操作.
find . -name "*.bak" -type f
find . -name "*.bak" -type f -delete

Grep​

grep [可选参数] '字符串' 文件名:

  • -i: 不区分大小写
  • -v: 排除指定字符串
  • -r: recursive on directory
  • -l: only print matched filename
  • --exclude

Find FunctionalComponent in files and open them all:

grep -lr FunctionalComponent src --exclude=*.md | xargs code

Man​

  • -f 显示操作等级
  • -k 包含匹配
  • -1/-2/.../-9 显示命令不同操作等级的帮助
  1. Commands (Programs) Those commands that can be executed by the user from within a shell.
  2. System calls Those functions which must be performed by the kernel.
  3. Library calls Most of the libc functions.
  4. Special files (devices) Files found in /dev.
  5. File formats and conventions The format for /etc/passwd and other human-readable files.
  6. Games
  7. Conventions and miscellaneous Overviews of various topics, conventions, and protocols, character set standards, and miscellaneous other things.
  8. System management commands Commands like mount(8), many of which only root can execute.

help​

显示 shell 内部命令帮助:

help cd

info​

显示大型帮助文档:

  • enter 进入
  • u 返回
  • p 上一节
  • n 下一节
  • q 退出