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From: | Kempf, Stephen |
Subject: | GNU Parallel Bug Reports User .rc files interacting with parallel's sub shells |
Date: | Tue, 5 Aug 2014 01:06:27 +0000 |
I’ve run into a case, which I believe is a bug, in which a user’s .rc file (for whichever shell is in the SHELL env var) interferes with the commands run by parallel. For
example: # .cshrc module purge > module load (something) > foreach i (a b c) (cmd) $i end # (cmd)s ran fine > parallel (cmd) ::: a b c (cmd): Command not found. (cmd): Command not found. (cmd): Command not found. If parallel is intended to be an easy-to-use replacement for foreach loops, then I’m pretty sure it would be a rare occurrence for it to be desirable for the sub shells to
source the user’s .rc file. Therefore I would like to request that the sub shells be invoked with an appropriate option (-f for tcsh; --norc for bash, etc.) to skip sourcing the user’s .rc file - or at least, for this behavior to be made available as a new
command line option. My parallel version (I think this is the latest version, but please correct me if it isn’t): > parallel --version GNU parallel 20120422 Copyright (C) 2007,2008,2009,2010,2011,2012 Ole Tange and Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. GNU parallel comes with no warranty. Web site: http://www.gnu.org/software/parallel When using GNU Parallel for a publication please cite: O. Tange (2011): GNU Parallel - The Command-Line Power Tool,
;login: The USENIX Magazine, February 2011:42-47. Complete, runnable example using an echo in the .cshrc as a proxy for environmental destruction: #.cshrc echo "I'm in your shell, sourcing your .cshrc!" > env SHELL=/bin/tcsh parallel echo ::: a b c I'm in your shell, sourcing your .cshrc! b I'm in your shell, sourcing your .cshrc! a I'm in your shell, sourcing your .cshrc! c Thanks, ~Steve |
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