Difference between revisions of "Bash history"

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:<code>export PROMPT_COMMAND='history -a'</code>
 
:<code>export PROMPT_COMMAND='history -a'</code>
 
* Advanced examples:  
 
* Advanced examples:  
**<code>echo 'export HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.[[bash_profile]]</code><ref>https://www.cyberciti.biz/faq/unix-linux-bash-history-display-date-time/</ref>
+
**<code>echo '[[export]] HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.[[bash_profile]]</code><ref>https://www.cyberciti.biz/faq/unix-linux-bash-history-display-date-time/</ref>
 
**<code>export [[PROMPT_COMMAND]]='if [ "$(id -u)" -ne 0 ]; then echo "$(date "+%Y-%m-%d.%H:%M:%S") $(pwd) $(history 1)" >> ~/.logs/bash-history-$(date "+%Y-%m-%d").log; fi'</code><ref>https://gist.github.com/NISH1001/bf2b713418b4e2ede8e6a7373b42c4c1</ref>
 
**<code>export [[PROMPT_COMMAND]]='if [ "$(id -u)" -ne 0 ]; then echo "$(date "+%Y-%m-%d.%H:%M:%S") $(pwd) $(history 1)" >> ~/.logs/bash-history-$(date "+%Y-%m-%d").log; fi'</code><ref>https://gist.github.com/NISH1001/bf2b713418b4e2ede8e6a7373b42c4c1</ref>
 
**Sending history to syslog (needs recompiling source): Bash also support syslog capabilities at compiling time<ref>https://unix.stackexchange.com/questions/457107/sending-bash-history-to-syslog</ref> but it is not enabled by default in most distributions: https://github.com/bminor/bash/blob/d233b485e83c3a784b803fb894280773f16f2deb/config-top.h
 
**Sending history to syslog (needs recompiling source): Bash also support syslog capabilities at compiling time<ref>https://unix.stackexchange.com/questions/457107/sending-bash-history-to-syslog</ref> but it is not enabled by default in most distributions: https://github.com/bminor/bash/blob/d233b485e83c3a784b803fb894280773f16f2deb/config-top.h

Revision as of 05:22, 22 May 2020

Bash command history feature allows to recall, edit and rerun previous commands. Also allows commands to be saved using the history -a command[1][2].

Variables to control Bash History:

Usage

  • Basic example:
export PROMPT_COMMAND='history -a'

Activities

  1. Install https://github.com/ohmybash bash customization
  2. Review output from history command

Other terms

See also

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Source: https://en.wikiversity.org/wiki/Bash_programming/Bash_History