oh-my-bash/lib/grep.sh
2017-03-20 19:51:00 +07:00

30 lines
675 B
Bash

#!/usr/bin/env bash
# is x grep argument available?
grep-flag-available() {
echo | grep $1 "" >/dev/null 2>&1
}
GREP_OPTIONS=""
# color grep results
if grep-flag-available --color=auto; then
GREP_OPTIONS+=( " --color=auto" )
fi
# ignore VCS folders (if the necessary grep flags are available)
VCS_FOLDERS="{.bzr,CVS,.git,.hg,.svn}"
if grep-flag-available --exclude-dir=.cvs; then
GREP_OPTIONS+=( " --exclude-dir=$VCS_FOLDERS" )
elif grep-flag-available --exclude=.cvs; then
GREP_OPTIONS+=( " --exclude=$VCS_FOLDERS" )
fi
# export grep settings
alias grep="grep $GREP_OPTIONS"
# clean up
unset GREP_OPTIONS
unset VCS_FOLDERS
unset -f grep-flag-available