bash - Variable expansion in comments -

bash - Variable expansion in comments -

is possible expand variables in comments within bash script?

i want write script feed sge. qsub syntax allows me pass additional parameters grid engine using lines within bash script begin #$. example,

#$ -q all.q #$ -s /bin/bash #$ -v #$ -m beas #$ -o run_20120103.out

what want -o parameter dynamically set variable, $1. naively write

#$ -o run_${1}.out

however, since line starts #, bash ignores , variable $1 not expanded.

any ideas? bash preprocessor? other way?

edit chose $1 example. $foo or $bar.

variable expansion happens in shell memory, doesn't impact file. therefore, doesn't matter bash expands.

instead, can generate script run on fly, expanded in place:

cat << eof | qsub [options] - #$ -o run_$1.out cmds eof

bash preprocessor sungridengine