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?
bash - Shell equality operators (=, ==, -eq) - Stack Overflow
Shell equality operators (=, ==, -eq) Asked 12 years ago Modified 3 years, 6 months ago Viewed 649k times
shell - Difference between sh and Bash - Stack Overflow
Shell - "Shell" is a program, which facilitates the interaction between the user and the operating system (kernel). There are many shell implementations available, like sh, Bash, C shell, Z shell, etc.
What do $? $0 $1 $2 mean in a shell script? - Stack Overflow
I often come across $?, $0, $1, $2, etc in shell scripting. I know that $? returns the exit status of the last command: echo "this will return 0" echo $? But what do the others do? What ...
Difference between Login Shell and Non-Login Shell?
May 8, 2012 · I understand the basic difference between an interactive shell and a non-interactive shell. But what exactly differentiates a login shell from a non-login shell? Can you give examples for uses of...
shell - How to concatenate string variables in Bash - Stack Overflow
Nov 15, 2010 · A bashism is a shell feature which is only supported in bash and certain other more advanced shells. It will not work under busybox sh or dash (which is /bin/sh on a lot of distros), or …
How can I call one shell script from another shell script?
I have two shell scripts, a.sh and b.sh. How can I call b.sh from within the shell script a.sh?
How to set environment variables from .env file - Stack Overflow
Apr 7, 2017 · USERNAME=ABC PASSWORD=PASS Unlike the normal ones have export prefix so I cannot source the file directly. What's the easiest way to create a shell script that loads content from …
How do I get a console-like connection into a Docker container's shell ...
docker debug <container or image> It allows you to get a shell (bash/fish/zsh) into any container. It also works for stopped containers and images. Essentially it's a replacement of docker exec -it …
How to represent multiple conditions in a shell if statement?
Sep 30, 2010 · How to represent multiple conditions in a shell if statement? Asked 15 years, 2 months ago Modified 3 years, 10 months ago Viewed 1.2m times