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linux - What does $@ mean in a shell script? - Stack Overflow
Apr 3, 2012 · What does a dollar sign followed by an at-sign (@) mean in a shell script? For example: umbrella_corp_options $@
shell - Difference between sh and Bash - Stack Overflow
Dec 14, 2024 · 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, …
Difference between ${} and $() in a shell script - Super User
$(command) is “command substitution”. As you seem to understand, it runs the command, captures its output, and inserts that into the command line that contains the $(…); e.g., $ ls -ld …
bash - Shell equality operators (=, ==, -eq) - Stack Overflow
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 and how do I …
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 …
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 set environment variables from .env file - Stack Overflow
Apr 7, 2017 · 116 Let's say I have .env file contains lines like below: USERNAME=ABC PASSWORD=PASS Unlike the normal ones have export prefix so I cannot source the file …
How to represent multiple conditions in a shell if statement?
Sep 30, 2010 · You are not asking about shell conditions but test conditions. The whole expression in your example is evaluated by test ([) and not by the shell. The shell evaluates …
shell - How can I compare numbers in Bash? - Stack Overflow
BTW, in bash a semi-colon is a statement separator, not a statement terminator, which is a new-line. So if you only have one statement on a line then the ; at end-of-line are superfluous. Not …
shell - How do I set a variable to the output of a command in Bash ...
Thus, consider using lowercase names for your own shell variables to avoid unintended conflicts (keeping in mind that setting a shell variable will overwrite any like-named environment variable).