What's the difference between <<, <<< and < < in bash?
Sep 27, 2015 · What's the difference between <<, <<< and < < in bash?Here document << is known as here-document structure. You let the program know what will be the ending text, and …
Is bash scripting the same as shell scripting? - Ask Ubuntu
Nov 30, 2014 · After man bash, some of the most important resources are Greg's wiki, Bash hackers and Steve Parker's recent book on Shell scripting that focuses mainly on Bash and is …
What is the meaning of exit 0, exit 1, and exit 2 in a bash script?
Mar 14, 2017 · A bash script is like a movie theater, there are different exists. The exit statements mark the location of the exits for the bash interpreter. When the script is fired, the interpreter is …
Difference between " " and ' ' in bash - Ask Ubuntu
Apr 5, 2015 · To reviewers considering closure: I think bash scripting is on-topic on Ask Ubuntu; plus, this question is of value. The bash reference manual is a great resource, that SO post is …
bash - How can I create a select menu in a shell script? - Ask Ubuntu
217 I'm creating a simple bash script and I want to create a select menu in it, like this: $./script echo "Choose your option:" 1) Option 1 2) Option 2 3) Option 3 4) Quit And according to user's …
When to use Bash and when to use Perl/Python/Ruby?
Bash is a general purpose scripting language just like Python, Ruby, Perl, but each has different strengths over the rest. Perl excells at text analysis, Python claims to be the most elegant of …
Bash scripting: test for empty directory - Super User
Oct 31, 2011 · Bash scripting: test for empty directory Ask Question Asked 13 years, 11 months ago Modified 1 year, 1 month ago
scripts - When to use () vs. {} in bash? - Ask Ubuntu
Apr 7, 2015 · From the official bash documentation: () ( list ) Placing a list of commands between parentheses causes a subshell environment to be created, and each of the commands in list …
Difference between [ [ ]] AND [ ] or ( ( )) AND ( ) in Bash
Mar 19, 2020 · What is the difference between using [ [ condition ]] and [ condition ] or ( ( condition )) and ( condition )? In what scenario do we need to use either of these? ( ( 10 > 9 )) works but …
What does >&2 mean in a shell script? - Ask Ubuntu
Oct 20, 2019 · Bash command that prints a message on stderr echo >&2 “some text” what does it mean in shell scripting In your command posted, both messages for stdout and stderr will …