grep commands

Search within a directory:

• Show both file and matched string: 
• grep -R text /home/users/workspace
• grep -lir text /home/users/workspace 
• Show only file: grep -Rl text /home/users/workspace
• Grep and append string: more musiclist.txt | grep ecx | sed -e 's/^/wget /' 
• Append a string on the every line from the grep result.
• ls -a | grep "Vol_" | perl -ne 'print "zip $_"'
• ls -a | grep "rar" | perl -ne 'print "unrar x $_"'
• Grep than replace string: 
• grep -rl matchstring somedir/ | xargs sed -i 's/string1/string2/g'
• grep -rl 'windows' ./ | xargs sed -i 's/windows/linux/g'