linux - Using the contents of a file as a perl argument -

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i trying followng

perl something.pl -t happiness=longstring

where longstring long (150,000 chars). long enough following message: "oserror: [errno 7] argument list long"

i figured instead there way redirect output of file. have not succeeded in doing however.

what looking along lines of:

perl something.pl -t happiness=<<<file.txt

where file.txt contains bunch of text. have struggled in < or <<< treated literally perl script , pushing '=<< 

perl something.pl -t happiness file.txt

your first argument happiness (assuming word, otherwise assign inside something.pl) , read file.txt separately, either 1 line @ time, or slurp whole thing (though not recommended 150k+ characters) , process normally.

the idea behind redirecting of output becomes moot when have access source of script -- people redirect output things gnu tools (ie 'df -h') because can't (easily) edit tool's source code bidding.


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