Meaning of $? (dollar question mark) in shell scripts
Aug 1, 2019 · What does echo $? mean in shell programming?true echo $? # echoes 0 false echo $? # echoes 1 From the manual: (acessible by calling man bash in your shell) ? Expands to …
bash - Shell equality operators (=, ==, -eq) - Stack Overflow
Shell equality operators (=, ==, -eq) Asked 11 years, 11 months ago Modified 3 years, 5 months ago Viewed 646k times
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 …
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 …
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 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 is the purpose of "&&" in a shell command? - Stack Overflow
Oct 27, 2021 · What is the purpose of "&&" in a shell command? Asked 14 years, 10 months ago Modified 2 years, 5 months ago Viewed 683k times
What is the difference between shell, console, and terminal?
The shell is the program which actually processes commands and returns output. Most shells also manage foreground and background processes, command history and command line editing.
How to highlight bash/shell commands in markdown?
Here shell is an alias for bash. Chroma has something called Session. Pygments (doc) uses console, shell-session for bash sessions, pwsh-session, ps1con for power shell sessions and …
Newest 'shell' Questions - Stack Overflow
5 days ago · I am building a shell as part of a school assignment, a limited version of bash. The whole program seems to function alright without any kind on leaks, but when I send …