loading a txt file not working

[Peter Newton]

I am trying to get the parameter -a10 form the second line of this txt file to insert on a plot. I have tried using the load command but it brings up an error.

gnuplot> rm /tmp/vtsidplot*data
                 ^
                "plinkcmd.txt" line 1: invalid command

Does anyone have an ideal as to how I can do this?
Txt file

rm /tmp/vtsidplot*data
/usr/local/bin/vtsidex -T2021-06-28_00:00:00 -mJXN -a10 -d1 -h360 -ote  /media/pete/Data/vlf-data | awk '{ print $1, (log($2)/log(10))*20, $3}' > /tmp/vtsidplot_JXN.data
stat -c "Data file %n created (%s bytes)" /tmp/vtsidplot_JXN.data

[Hans-Bernhard Broeker]

On what basis did you conclude that regular shell commands like 'rm' would just work in a gnuplot script?