One liner to see if grep returned something?
52920
Can grep return true/false or are there alternative methods
12013
How to find out the reason a command/code was executed on Linux?
22156
How do I tell if a regular file does not exist in Bash?
100911
How to "grep" for line length in a given range?
33198
grep not working as expected
3943
How do I search my command-line history for commands I used before?
134393
Evaluating the return value of a command line
6958
How can I check if a program exists from a Bash script?
50742
Can grep output only specified groupings that match?
115539
Using grep to search texts with single quote?
156045
How do I grep for lines containing either of two words, but not both?
158565
Determine if a function exists in bash
91365
Using grep after using find to get the files
110692
Redirect grep error output to file
88788
Check my find/exec command before running
115046
grep one line before the match plus the match
128779
How do I get the list of exit codes (and/or return codes) and meaning for a command/utility?