# Useful grep arguments
## Search without case sensitivity
`cat file.txt | grep -i "pattern"`
## Add lines to match pattern
### Before
`cat file.txt | grep -B 3 "pattern"`
### After
`cat file.txt | grep -A 3 "pattern"`
### Both
`cat file.txt | grep -C 3 "pattern"`
## Show line numbers with matches
`cat file.txt | grep -n "pattern"`