Searching patterns inside files: GREP, STRINGS

GREP

$ grep [pattern] FILE
Searches for a pattern in a file and print all matching lines

$ grep -v [pattern] FILE
Prints all lines that do not match the pattern

$ grep [0-9] FILE
Prinst the lines that contain the numbers 0 through 9

$ grep -C 3 [pattern] FILE
Prints searched line and n lines after before the result.

STRING

$ strings FILE | grep [string]
Search human readable patterns in binary files.