How to show a difference between the usage of '*' , '+' and '?' in grep?
37188
Difference between '.' , '?' and '*' in regular expressions?
2997
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
741
What is the difference between the Bash operators [[ vs [ vs ( vs ((?
126000
How to perform a multi line grep
121382
Bash regular expression pattern matching spaces, within double brackets test, using "~=" operator
33198
grep not working as expected
118486
Detecting pattern at the end of a line with grep
126833
Is there any alternative to grep's -A -B -C switches (to print few lines before and after )?
46150
Can't use exclamation mark (!) in bash?
14398
How to grep-inverse-match and exclude "before" and "after" lines
69991
How do I use grep to search for the string "-1"
106655
Grep: The asterisk (*) doesn't always work
150775
Grep for literal strings
115046
grep one line before the match plus the match
23105
What is the difference between `grep`, `egrep`, and `fgrep`?
24483
plus/minus vs +/- in latex preamble
38607
Variable substitution with an exclamation mark in bash