Bash script not running tclsh

Question

I am able to run bash on a remote home properly. I have TCL installed on the remote host but am not able to run TCL. When I run this script, I get no errors.

#!/bin/bash
ssh [email protected] << EOF
echo "Connected";
echo "CD TO ~";
cd ~;
echo "Create text file";

script='
        set data "This is some test data.\n"
        set filename "test.txt"
        set fileId [open $filename "w"]
        puts -nonewline $fileId $data
        close $fileId
exit 0'

tclsh << HERE
$script
echo "Exit";

exit
EOF

btw, you're also missing a HERE. Presumably that should be just before the echo "Exit". That one you don't want to quote, since you're using that heredoc as a POSIX-sh equivalent to a herestring. — Charles Duffy
– Charles Duffy, Commented Jan 29, 2015 at 3:09

Charles Duffy · Accepted Answer · 2015-01-29 03:11:21Z

5

Heredocs expand variables inside them by default, so your [open $filename "w"] is changed to open "w"] (and similar changes elsewhere) unless you have a filename variable exported in your outer script. If you don't want that expansion to occur, quote your sigil:

ssh [email protected] <<'EOF'

script='content'

# intentionally not quoting this sigil, since in this case expansion is desired
tclsh <<HERE
$script
HERE

EOF

edited Jan 29, 2015 at 3:11

answered Jan 29, 2015 at 2:59

Charles Duffy

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2 Comments

Ryahn Over a year ago

And its always the simplest of things

Donal Fellows Over a year ago

I think it's easier at this point to start using separate files for things. Having everything all in one is all very well, but the confusion inevitably mounts after a while…

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