linux - mulitple commands in back tics

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65889440/mulitple-commands-in-back-tics

Answer 1

Two possible paths here: split the command into two parts, and use BASH to compare, or write a composite line. Either way, better to use the $(command) instead of backticks.

Splitting the command

SVC_VER=$(getserversion.py)
CLI_VER=$(getcliversion.py)
if [ "$SVC_VER" = "$CLI_VER" ] ; then
   ...
fi

Or, combining them into single command line

MATCH=$(getversions.py | grep $(getcliversion.py))

Note that it's not possible to use the backticks for the second command, as the back ticks do not support nesting of commands.