What’s the right way to quote $(command $arg)?
It’s high time to solve this conundrum that’s been bothering me for years…
command-substitution
Why do newline characters get lost when using command substitution?
The read utility shall read a single line from standard input.
Where has the trailing newline char gone from my command substitution?
The following code best describes the situation. Why is the last line not outputting the trailing newline char? Each line’s output is shown in the comment. I’m using GNU bash, version 4.1.5
Do I need to quote command substitutions when assigning their output to a variable?
DIRNAME=”$(dirname $FILE)” will not do what you want if $FILE contains whitespace or globbing characters [?*.
Command substitution: splitting on newline but not space
I know I can solve this problem several ways, but I’m wondering if there is a way to do it using only bash built-ins, and if not, what is the most efficient way to do it.
Pipelined Sed does not work on found filename inside Bash command substitution when invoked from Find “-exec”
./sample.txt Specimen_before.TXT ./sample.TXT Specimen_after.TXT
Can command substitution be nested in variable substitution?
I would like to use variable substitution on a particular string that I access via a command. For example, if I copy something into my clipboard, I can access it like this.
How to preserve the newline character (n) when capture output of a command in a variable
As a simple example, I have a bunch of source code files. I want to store the “head” command output to a variable for all these files.
When should one use $( ) in defining variables
Some shell scripts I have come across use the following syntax when defining variables:
Behaviour of bash command substitution with command from string in variable
There are seven kinds of expansion … The order of expansions is: brace expansion; tilde expansion, parameter and variable expansion, arithmetic expansion, and command substitution (done in a left-to-right fashion); word splitting; and filename expansion