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