bash - What do the brackets in if-statements do?
64104
What does `[ EXPRESSION ], [ ] and [OPTION` mean in `man test`?
8651
Bash scripting unexpected operator
79418
use regular expression in if-condition in bash
52106
bash if -a vs -e option
909
What is this shell/Bash syntax: someVariable=someValue someCommand
15609
What does this cryptic Bash command mean?
158457
Using | pipe character from a $variable makes it treat as just another argument in bash; how to escape it?
53269
bash - True if the length of string is (non)zero?
124765
How does bash interpret the equal operator with no surrounding spaces in a conditional?
128374
what is $$ in bash?
12875
Understanding the exclamation mark (!) in bash
120214
What's the difference between <<, <<< and < < in bash?
25022
In bash, is it possible to use an integer variable in a brace expansion
25478
What does ${1+"$@"} mean in a shell script, and how does it differ from "$@"?
89588
Why do I need to quote variable for if, but not for echo?
41303
When do we need curly braces around shell variables?
741
What is the difference between the Bash operators [[ vs [ vs ( vs ((?