Difference between revisions of "Unix Helpers"
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(Created page with "== grep == === Colored output === Colered Output of a complete file. The regular expression "|$" matches those line that matches the pattern AND have an endline. This are ALL...") |
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* http://superuser.com/questions/175527/is-there-a-tool-that-beeps-and-highlights-matching-lines-that-are-piped-through | * http://superuser.com/questions/175527/is-there-a-tool-that-beeps-and-highlights-matching-lines-that-are-piped-through | ||
| + | <pre> | ||
#!/bin/bash | #!/bin/bash | ||
regex="${1}" | regex="${1}" | ||
| − | + | if [ "${regex}" = "" ] | |
| − | # | + | then |
| − | highlight_on=$(tput setaf 2) # | + | echo "USAGE $0 <PATTERN> < <FILE>" |
| + | exit 1 | ||
| + | fi | ||
| + | |||
| + | # green, use setab to do inverse instead of foreground | ||
| + | highlight_on=$(tput setaf 2) | ||
| + | |||
| + | # reset to standard color scheme | ||
highlight_off=$(tput sgr0) | highlight_off=$(tput sgr0) | ||
while read line | while read line | ||
do | do | ||
| − | + | [[ $line =~ $regex ]] && echo -n $''"$highlight_on" | |
| − | + | echo "$line$highlight_off" | |
done | done | ||
| + | |||
| + | exit 0 | ||
| + | </pre> | ||
Latest revision as of 10:56, 7 January 2014
grep
Colored output
Colered Output of a complete file. The regular expression "|$" matches those line that matches the pattern AND have an endline. This are ALL lines of the file!
egrep --color "pattern|$" file grep --color -E "pattern|$" file
#!/bin/bash
regex="${1}"
if [ "${regex}" = "" ]
then
echo "USAGE $0 <PATTERN> < <FILE>"
exit 1
fi
# green, use setab to do inverse instead of foreground
highlight_on=$(tput setaf 2)
# reset to standard color scheme
highlight_off=$(tput sgr0)
while read line
do
[[ $line =~ $regex ]] && echo -n $''"$highlight_on"
echo "$line$highlight_off"
done
exit 0