How can I use a variable string within command substitution?
9467
How can we run a command stored in a variable?
149251
Quoting / escaping / expansion issue in "command in a variable"
81773
Setting and using variable within same command line in Windows cmd.exe
152734
Using the literal '@' with a string variable
156517
Adding string to variable name
57604
Set variable conditionally on command line
96383
How to use variables inside single quotes
142651
Where can you perform variable substitution in an equation?
142102
Replace a string in shell script using a variable
106263
How do I use the C preprocessor to make a substitution with an environment variable
103604
Does bash recognize a variable declaration as string if you do not put the quotation marks?
88254
How do I perform a Perl substitution on a string while keeping the original?
72733
How do I use shell variables in an awk script?
110625
How can I combine two text strings to represent the name of a command?
72089
How to use variable in sed command
96408
Copy "string" through command line
104154
How to echo "$x_$y" in Bash script?