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Top Forums UNIX for Advanced & Expert Users Syntax when using the 'exec' command Post 302985381 by Corona688 on Tuesday 8th of November 2016 05:28:28 PM
Old 11-08-2016
Quote:
how can i automate -- inside of the script -- for stdout and stderr to be re-directed to the same file, something that usually requires entering an admin password.
That is easy.

Code:
exec 1>filename
exec 2>&1

echo "from stderr" >&2
echo "from stdout"

None of the above requires root... I think you will discover that the problem is not exec -- the problem is the file itself. Perhaps the file is owned by root, preventing you from writing to it? Show ls -l filename please.

If your script runs with insufficient permissions, it cannot get more. Period. Full stop.

Either run it with sufficient permissions or fix the file so it doesn't need extra permissions.
 

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DH-EXEC-INSTALL(1)						      dh-exec							DH-EXEC-INSTALL(1)

NAME
dh-exec-install - Install (and possibly rename) files. SYNOPSIS
#! /usr/bin/dh-exec debian/default.conf => /etc/my-package/start.conf usr/bin/* DESCRIPTION
Being a sub-command of dh-exec(1), this program must not be ran directly, but through dh-exec, which automatically runs all available sub-commands if run bare; or explicitly with dh-exec --with=install. It is meant to be used for dh_install(1) files, and those alone. If it finds that its input is not such a file, it will do nothing, but echo back the contents. The purpose of the program is to extend dh_install(1)'s functionality, by allowing to specify a destination filename. This can be accomplished by a special syntax: the " => " mark between a source and a destination means that the source file should be installed with the specified destination name. For obvious reasons, the source must not be a wildcard, and the destination in this case must be a file, and not a directory. All other non-comment lines are left alone. RESTRICTIONS
Due to the way executable scripts are called from debhelper(1), there is no way to know what options were used for the original dh_install(1). This means, that the --sourcedir option of dh_install(1) will not work correctly when dh-exec-install is in use. IMPLEMENTATION
Internally, the renaming happens by creating a temporary directory under debian/tmp/, and copying (or moving, if the source was under debian/tmp/ to begin with) the file there, with the new name. This is done this way to allow dh_install(1) to do the real copying, and allow its options to continue working, even when renaming is involved. The temporary directory is put under debian/tmp so that it will be cleaned by dh_prep(1) when the clean target gets to run. Thus, no extra code is needed anywhere to clean up the renamed files. ENVIRONMENT
DH_EXEC_SCRIPTDIR Indicates which directory the command-specific scripts should be sought for. If not specified, scripts will be searched for in /usr/share/dh-exec/. FILES
$DH_EXEC_SCRIPTDIR/dh-exec-install-* The various scripts for the higher-level program. SEE ALSO
debhelper(1), dh-exec(1), dh_install(1) AUTHOR
dh-exec-install is copyright (C) 2011-2012 by Gergely Nagy <algernon@madhouse-project.org>. 2012-05-03 DH-EXEC-INSTALL(1)
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