🖥️hash

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the hash command with important options and switches using examples.

2 minute read

▁ ▂ ▃ ▄ ꧁ 🔴☠ COMMANDLINE-KUNGFU WITH CHEATSHEETS ☠🔴꧂▅ ▃ ▂ ▁

#  ██╗  ██╗ █████╗ ███████╗██╗  ██╗
#  ██║  ██║██╔══██╗██╔════╝██║  ██║
#  ███████║███████║███████╗███████║
#  ██╔══██║██╔══██║╚════██║██╔══██║
#  ██║  ██║██║  ██║███████║██║  ██║
#  ╚═╝  ╚═╝╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝

# Forget all remembered path locations
hash -r
# Explanation: bash remembers the full path name of each command you enter, so it does not have to lookup in $PATH every single time you run the same thing. It also counts the number of times you used each command in the current session, you can see the list with hash.
# Anyway, this behavior can poses a small problem when you reinstall an application at a different path. For example you reinstall a program that used to be in /usr/local/bin and now it is in /opt/local/bin. The problem is that if you used that command in the current shell session, then bash will remember the original location, which of course does not work anymore. To fix that, you can either run hash cmd which will lookup the command again, or run hash -r to forget all remembered locations (less efficient, but maybe faster to type ;-) For more details, see help hash

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command hash in a clear format. This allows users to quickly access the needed information for hash without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for hash are a valuable resource to work efficiently and purposefully.

░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░

  █║▌│║█║▌★ KALI ★ PARROT ★ DEBIAN 🔴 PENTESTING ★ HACKING ★ █║▌│║█║▌

              ██╗ ██╗ ██████╗  ██████╗ ██╗  ██╗███████╗██████╗
             ████████╗██╔══██╗██╔═══██╗╚██╗██╔╝██╔════╝██╔══██╗
             ╚██╔═██╔╝██║  ██║██║   ██║ ╚███╔╝ █████╗  ██║  ██║
             ████████╗██║  ██║██║   ██║ ██╔██╗ ██╔══╝  ██║  ██║
             ╚██╔═██╔╝██████╔╝╚██████╔╝██╔╝ ██╗███████╗██████╔╝
              ╚═╝ ╚═╝ ╚═════╝  ╚═════╝ ╚═╝  ╚═╝╚══════╝╚═════╝

               █║▌│║█║▌ WITH COMMANDLINE-KUNGFU POWER █║▌│║█║▌

░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░

Feedback

Was this page helpful?

Glad to hear it! Please tell us how we can improve.

Sorry to hear that. Please tell us how we can improve.