grep, find, sed examples

#rgrep
grep -r --include="pom.xml" aspectj .

#inverse
grep -v 'http://' *.txt
#inverse will remove lines containing a or b
grep -Ev 'a|b' source.txt > dest.txt

#find all .deb SNAPSHOTS older than 300 minutes, and print their size
find . -type f -name *-SNAPSHOT.deb -mmin +300 | xargs du -hs

#find (non-greedy) text between two strings (multiline is ok)
sed -n '/CARL CHECK/,/CARL END/{n;p}' preface.txt