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linuxbashescapingwgetsanitization

Sending multiline command output via wget as post-data

I'm trying to run a command that will send a POST request with data that is a result of another command. An example will say it all:

wget -O- --post-data=$(ls -lah) http://192.168.30.53/api/v2/network/clients

This is obviously wrong, but I have no idea how to "escape" the value of ls -lah command before passing it as a parameter.

Current output if needed:

wget: invalid option -- '>'
wget: --wait: Invalid time period '-r--r--'
Solution

  • You do not escape - you quote the usage. Check your scripts with shellcheck.

    ... --post-data="$(ls -lah)" ...