grep -rnE "Error|Warning|error|warning" * | grep \.html  | grep "<TITLE>Error"

grep -rnEA10 "Error|Warning|error|warning" * | grep \.html  | grep -E "<b>"

grep -rnEA200 "0\-0" * | grep \.html | grep -E "advertiserId"

#!/bin/bash

check out goes here
cd dir
grep -r "*;*" * | wc -l

grep "from " /var/log/mysql/mysqld.log | awk -Ffrom '{print $2}' | awk '{print $1}' | cat > /home/shantanu/testing.txt

grep '\[Spam score: [1-9]' /var/log/exim/main.log | awk '{print $3}' | xargs -t -i grep {} /var/log/exim/main.log > /var/log/exim/spam_score.log

grep 'reporter\.pl' /var/log/exim/main.log | awk '{print $3}' | xargs -t -i grep {} /var/log/exim/main.log > /var/log/exim/spam_reporter.pl.log

egrep "\w+([._-]\w)*@\w+([._-]\w)*\.\w{2,4}"

svn propset svn:ignore -F .cvsignore .

  … with line number: -n
  … with file name: -H

sudo perl -MCPAN -e 'install Bundle::LWP'

<meta http-equiv=Refresh content="0; URL=http://blog.jm3.net/" />

ssh -l cs 208.101.26.91

#! /bin/sh

#Goto here
here=/home/guillaume/Personal
cd $here

#BBC Lisbon weather id
id=0048

#BBC weather RSS feed address
feed="http://feeds.bbc.co.uk/weather/feeds/rss/5day/world/${id}.xml"

#City
city=lisbon

#temporary file
file="weather${city}"

#Weather twitter bot
twitbot=weatherlisbon:*******

#Timestamp the log file
echo .>> $file.log
date >> $file.log

#Read the RSS feed and filter it
curl $feed | grep 'title' | tail -n 1 | perl -wlne'm/title>(.*)<\/title/i && print $1' | sed -e "s/&#xB0;//g" > $file.txt

#Read the forecast into a weather variable
read weather < $file.txt

#Twit the weather variable away
curl --basic --user $twitbot --data status="$weather" http://twitter.com/statuses/update.xml >> $file.log

find . -path '*/.svn' -prune -o -type f -print | xargs -e grep -I -n -e PATTERN

grep -R --files-with-matches 'SEARCH_STRING' . | sort | uniq | xargs perl -pi~ -e 's/SEARCH_STRING/REPLACE_STRING/'

grep -rsniH your_string

grep "I am a \(cat\|dog\)" 

pgrep

netstat -a | grep ftp