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Top Forums Shell Programming and Scripting Measure thread execution (in C, unix) Post 302507646 by DGPickett on Thursday 24th of March 2011 11:31:12 AM
Old 03-24-2011
Probably a lack of environment, as no #!/usr/bin/perl -w as the first line of ./hash.pl would fail interactively, and most commands do not care there is no tty. For instance, ps -f is tied to your tty, ps -fp $pid is not, nor ps -fe | grep -c <pattern>, ps -fu <user_id>!

Put a "set >/tmp/mycronenv" into the script, let cron run it, and compare it to "set >/tmp/mytermenv" using diff.
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PLOT(1G)																  PLOT(1G)

NAME
plot - graphics filters SYNOPSIS
plot [ -Tterminal [ raster ] ] DESCRIPTION
These commands read plotting instructions (see plot(5)) from the standard input, and in general produce plotting instructions suitable for a particular terminal on the standard output. If no terminal type is specified, the environment parameter $TERM (see environ(5)) is used. Known terminals are: 4014 Tektronix 4014 storage scope. 450 DASI Hyterm 450 terminal (Diablo mechanism). 300 DASI 300 or GSI terminal (Diablo mechanism). 300S DASI 300S terminal (Diablo mechanism). ver Versatec D1200A printer-plotter. This version of plot places a scan-converted image in `/usr/tmp/raster' and sends the result directly to the plotter device rather than to the standard output. The optional argument causes a previously scan-converted file raster to be sent to the plotter. FILES
/usr/bin/tek /usr/bin/t450 /usr/bin/t300 /usr/bin/t300s /usr/bin/vplot /usr/tmp/raster SEE ALSO
plot(3), plot(5) BUGS
There is no lockout protection for /usr/tmp/raster. PLOT(1G)
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