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Full Discussion: Eval
Top Forums Shell Programming and Scripting Eval Post 302798985 by Corona688 on Thursday 25th of April 2013 01:47:29 PM
Old 04-25-2013
Why not source the temp file, then?

It's not a question of how eval works, it's a question of how the shell works. When a string is unquoted, it splits on all whitespace, not lines.

Using eval means the string gets split twice -- once when you feed it into eval, and again when eval actually executes the code you give it.

What is the echo for? Do you want eval to print those statements or run them?

I think eval "$(cat file)" is closest to what you want... But again I strongly question whether you need eval at all. I bet you could have avoided it if you'd known that using a pipe there would paint you into a corner.
 

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VM(1)								      mgetty								     VM(1)

NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts ACTIONS
beep options [<frequency [<length in 0.001sec>]]> diagnostics options device name (e.g. ttyS2 dial options phone number help play options [<file names]+> record options file name shell options [<shell script [shell options]]> wait options [<time in seconds]> devicetest OPTIONS
-c n use compression type n -d n set i/o device -t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7> -l s set device string (e.g. -l ttyS2:ttyC0) -v verbose output -w use off / on hook signal from local handset to start and stop recording -x n set debug level -L n set maximum recording length in sec -P print first DTMF tone on stdout and exit -R read and print DTMF string on stdout and exit -S s set default shell for shell scripts (e.g. -S /bin/sh) -T n set silence timeout in 0.1sec -V n set silence threshold to <n> (0-100%%) SEE ALSO
vgetty(1) POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 30: You forgot a '=back' before '=head1' Around line 32: '=item' outside of any '=over' Around line 71: You forgot a '=back' before '=head1' perl v5.10.1 2010-04-04 VM(1)
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