1 # Use colours for grep if possible.
2 if grep -V 2>/dev/null | grep GNU >/dev/null; then
3 alias grep='grep --color=auto'
5 # Old versions of grep understand GREP_COLOR.
6 export GREP_COLOR='0;33'
8 # Newer versions allow setting colours based on context, using GREP_COLORS.
9 # cx: Lines of context; sl: Matching lines; mt: Search string; fn: Filename
10 # ln: Line number; bn: Byte offset; se: Separators.
11 colours=$(tput colors 2>/dev/null)
12 if [ $colours = 256 ]; then
13 export GREP_COLORS='cx=38;5;246:sl=:mt=33:fn=38;5;25:ln=38;5;82:bn=33:se=38;5;246'
14 elif [ $colours -gt 88 ]; then
15 export GREP_COLORS='cx=38;5;84:sl=:mt=33:fn=38;5;22:ln=38;5;44:bn=33:se=38;5;84'
17 export GREP_COLORS='cx=31:sl=:mt=33:fn=36:ln=34:bn=33:se=31'