Cheat sheet based off the Udemy cysa+ course from Jason Dion – video 75 as i’m sure i’ll end up looking for it at some point in the future.
REGEX:
[] – Match a single instance of a chracter from a range such as a-z A-Z 0-9 or for all [a-zA-Z0-9]
[\s] – Match whitespace
[\d] – Match a digit
+ – Match one or more occurrences e.g. \d+-
*- Match zero or more occurrences e.g. \d*
? – Match one or none occureences e.g. \d?
{} – Match the number of times within the braces e.g. \d{3} finds 3 digits in a row or \d{7-10} matches 7,8,9 or 10 digits in a row
| – OR
^ – Only search at the start of a line
$ – Only search at the end of a line
GREP:
-F = search for a literal value, can use “” instead of -F
-r = recursive
-i = Ignore case sensitivity
-v = Find things which do not match
-w = Treat search strings as words (instead of parts of words)
-c = Show count of matches
-l = Return names of files containing matches
-L = Return names of files without matches
Urban Security Research 