dotfiles/.bash_it/plugins/available/history.plugin.bash
2022-02-27 20:00:49 +01:00

40 lines
1.1 KiB
Bash

# shellcheck shell=bash
cite about-plugin
about-plugin 'improve history handling with sane defaults'
# append to bash_history if Terminal.app quits
shopt -s histappend
# erase duplicates; alternative option: export HISTCONTROL=ignoredups
export HISTCONTROL=${HISTCONTROL:-ignorespace:erasedups}
# resize history to 100x the default (500)
export HISTSIZE=${HISTSIZE:-50000}
top-history() {
about 'print the name and count of the most commonly run tools'
if [[ -n $HISTTIMEFORMAT ]]; then
# To parse history we need a predictable format, which HISTTIMEFORMAT
# gets in the way of. So we unset it and set a trap to guarantee the
# user's environment returns to normal even if the pipeline below fails.
# shellcheck disable=SC2064
trap "export HISTTIMEFORMAT='$HISTTIMEFORMAT'" RETURN
unset HISTTIMEFORMAT
fi
history \
| awk '{
a[$2]++
}END{
for(i in a)
printf("%s\t%s\n", a[i], i)
}' \
| sort --reverse --numeric-sort \
| head \
| column \
--table \
--table-columns 'Command Count,Command Name' \
--output-separator ' | '
}