
What is the meaning of $? in a shell script? - Unix & Linux Stack …
This latter usage is faster, does not contaminate the shell's variable namespace with what amounts to temp variables, can often be a lot more readable for humans and encourages the …
Shell scripting: -z and -n options with if - Unix & Linux Stack …
Shell scripting: -z and -n options with if Ask Question Asked 11 years, 10 months ago Modified 9 months ago
How can I pass a command line argument into a shell script?
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, /home/user/bin/script …
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
Passing named arguments to shell scripts - Unix & Linux Stack …
Is there any easy way to pass (receive) named parameters to a shell script? For example, my_script -p_out '/some/path' -arg_1 '5' And inside my_script.sh receive them as: # I believe …
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 …
scripting - format the shell script output as a table - Unix & Linux ...
Feb 17, 2020 · I am running a script in a loop which creates some data as per some logic and then displays output in some combination but the output I am getting is in new line Roll …
shell script - Using the not equal operator for string comparison ...
The question doesn't mention bash, and in fact deliberately only mentions shell script, both in the tags, and in the question. This answer would fail in a POSIX environment.
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.
Adding two numbers using expr - Unix & Linux Stack Exchange
I'm learning Shell scripting for a diploma in IT I'm currently doing. I'm trying to write a small script that adds two numbers as shown as in one of the tutorials we were given. echo "Enter two nu...