What do $? $0 $1 $2 mean in shell script? [duplicate]

What do $? $0 $1 $2 mean in shell script? [duplicate]

bash shell ash

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does linux shell support list data structure?

linux bash shell ash

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How to add a new line in the bash string? [duplicate]

linux bash shell sh ash

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All newlines are removed when saving cat output into a variable

linux bash shell ash

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How to reverse a list of words in a shell string?

linux shell awk sed ash

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how to replace "/" in a POSIX sh string

linux string shell ash

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How to run a script in background (linux openwrt)?

linux shell ash

shell

How to keep program running in background in ash shell

linux shell ssh embedded-linux ash

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Check if a function exists before executing it in shell

linux function shell ash

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How to know the parent process if the child is launched in background and the parent is already exited

linux bash shell process ash

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How to make a return from a child function cause a return to the parent function?

linux bash shell ash

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How can I store a list of quoted strings in a variable in Bourne shell? (without Bash arrays)

shell sh busybox quoting ash

shell

How to suspend a backgrounded shell with a script?

shell background-process suspend ash

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How to move file inside directory, using Linux (Bash)

linux bash shell mv ash

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how to put all command arguments in one variable

linux shell ash

shell