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hash command in Linux with examples

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hash command in Linux system is the built-in command of bash which is used to maintain a hash table of recently executed programs. It remembers and shows the program locations. It will give the full pathname of each command name.


hash [-lr] [-p pathname] [-dt] [name ...]


  • -d: This is used to forget the remembered location of each NAME.
  • -l: It will display in a format that may be reused as input.
  • -p: pathname use PATHNAME as the full pathname of NAME.
  • -r: Forget all remembered locations.
  • -t: To display the remembered location of each NAME, preceding each location with the corresponding NAME if multiple NAMEs are given.

Example 1: hash command without any option


Example 2: hash command with -r option

Example 3: hash command with -l command

hash -l

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Last Updated : 21 May, 2019
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