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Passing variables from shell script to GNU screen

I have a linux script shell that looks like this:

tron="/home/duke/aa/bin/armagetronad-dedicated"
var="/home/duke/aa/servers/$1/var/"
log="${var}logs/all_console_logs.log"
userconfigdir="${var}customize/config/"
parser="${var}customize/parser-rpg.php"
ladderlog="${var}ladderlog.txt"
cmds="${var}cmd.txt"

screen -S $1 -X kill
screen -d -m -S $1
screen -S $1 -X stuff 'tail -n0 -f -s 0.01 $cmds | (while true; do $tron --userconfigdir $userconfigdir --vardir $var; done) | tee -a $log 
'

However, when passing variables to a screen session using stuffit, it actually sends "$ cmds" instead of the value inside $ cmds. Is it also possible to translate variables into a screen session?

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1 answer

Single quotes suppress variable substitution. Will this work instead of the last line?

screen -S $1 -X stuff "tail -n0 -f -s 0.01 $cmds | (while true; do $tron --userconfigdir $userconfigdir --vardir $var; done) | tee -a $log"
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