
Shell scripting: -z and -n options with if - Unix & Linux Stack …
Jan 16, 2014 · Shell scripting: -z and -n options with if Ask Question Asked 11 years, 9 months ago Modified 9 months ago
What is the meaning of $? in a shell script? - Unix & Linux Stack …
Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?
What does -f mean in an if statement in a bash script?
Jul 5, 2018 · -1 This answer is very misleading, following on from the question’s misleading title. -f has nothing to do with if; it is an option for the [ command, which just happens to be called …
What does $# mean in shell? - Unix & Linux Stack Exchange
What does $# mean in shell? I have code such as if [ $# -eq 0 ] then I want to understand what $# means, but Google search is very bad for searching these kinds of things.
Difference between ${} and $() in a shell script - Super User
Difference between $ {} and $ () in a shell script Ask Question Asked 10 years, 4 months ago Modified 9 months ago
bash - How to get execution time of a script effectively? - Unix ...
Jan 26, 2017 · I would like to display the completion time of a script. What I currently do is - #!/bin/bash date ## echo the date at start # the script contents date ## echo the date at end …
shell script - What does -s and - Unix & Linux Stack Exchange
Mar 31, 2017 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …
shell script - How do I trim leading and trailing whitespace from …
I would like to remove all leading and trailing spaces and tabs from each line in an output. Is there a simple tool like trim I could pipe my output into? Example file: test space at back test...
How can I pass a command line argument into a shell script?
Feb 10, 2012 · The shell command and any arguments to that command appear as numbered shell variables: $0 has the string value of the command itself, something like script, ./script, …
In a bash script, using the conditional "or" in an "if" statement
In a bash script, using the conditional "or" in an "if" statement Ask Question Asked 13 years, 2 months ago Modified 11 months ago