Check in shellscript if a variable is partially the same as a parameter
31087
How to check if a string contains a substring in Bash
21291
Lookup shell variables by name, indirectly
123684
Test for non-zero length string in Bash: [ -n "$var" ] or [ "$var" ]
109904
Test if two things typeset identical results
17361
How to check if a string has spaces in Bash shell
102224
Does variable=$(...) store the command or the result of the command in POSIX sh
110967
how to grep a variable name
49696
Checking it see if a file exists in a script
152938
How can I run a command if one or more conditions in /execute are satisfied?
64181
Best way to call command within a shell function having the same name
53586
How can I type-check variables in Python?
129593
Syntax with pound and percent sign after shell parameter name
37369
How do I check if two logical expressions are equivalent?
33643
How to program a shell script to start another script and use the same variable values
54838
determine shell in script during runtime
19369
How can I use $variable in a shell brace expansion of a sequence?
132792
Can shell variable name include a hyphen or dash (-)?