52-which Concise Notes

Displays the directory where the system commands are located

Which command-list

Parameters

command-list is one or more commands that are searched by which (utility)

Examplewhich single command

1 which ls 2 /bin/ls

which multiple commands

1 which grep Cat Cut 2 /bin/grep3 /bin/cat4 /usr/bin/cut

Tips

1.which can only be used to search the directory where the command is located, if this command has an alias also displays aliases (depending on the release version)

2.whereis can search not only the directory where the command is located, but also the path to its help document store

3. Typically, the/sbin and/usr/sbin directories store root user commands,/bin and/usr/bin directories store ordinary user commands

4.whatis can display a short message of the command, what can be done

52-which Concise Notes