WHAT ARE THE SPECIAL DOLLAR SIGN SHELL VARIABLES? - STACK OVERFLOW
Sep 14, 2012 $! is the PID of the most recent background command. $0 is the name of the shell or shell script. Most of the above can be found under Special Parameters in the Bash … From stackoverflow.com
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 … From stackoverflow.com
SHELL - WHAT IS THE "EVAL" COMMAND IN BASH? - UNIX & LINUX STACK …
What can you do with the eval command? Why is it useful? Is it some kind of a built-in function in bash? There is no man page for it.. From unix.stackexchange.com
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 … From stackoverflow.com
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. From unix.stackexchange.com
WHAT IS THE $? (DOLLAR QUESTION MARK) VARIABLE IN SHELL SCRIPTING?
I'm trying to learn shell scripting, and I need to understand someone else's code. What is the $? variable hold? I can't Google search the answer because they block punctuation characters. From stackoverflow.com
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