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UNIX for Dummies Questions & Answers
sudo not allow User to run sed
Post 302187003 by duderonomy on Friday 18th of April 2008 04:46:18 PM
04-18-2008
Hi!
I appreciate the feedback that I was vague.
Thank you (very much) for your time.
Here's my input and output for the two cases described in my
original post:
Case A)
---------
$ su -
<entered password>
# cd /etc
# sed -e 's/A/B/' < motd.ORIG > motd
#
It works! (writes file "/etc/motd" which is inside root owned
directory and file also has root ownership)
Case B)
---------
$ cd /etc
$ sudo sed -e 's/A/B/' < motd.ORIG > motd
-bash: ./motd: Permission denied
It Fails.
##
I really need this to work via sudo as this one step
is part of a larger script. I do not see my problem.
Thank you for any hints.
-D
I appreciate the feedback that I was vague.
Thank you (very much) for your time.
Here's my input and output for the two cases described in my
original post:
Case A)
---------
$ su -
<entered password>
# cd /etc
# sed -e 's/A/B/' < motd.ORIG > motd
#
It works! (writes file "/etc/motd" which is inside root owned
directory and file also has root ownership)
Case B)
---------
$ cd /etc
$ sudo sed -e 's/A/B/' < motd.ORIG > motd
-bash: ./motd: Permission denied
It Fails.
##
I really need this to work via sudo as this one step
is part of a larger script. I do not see my problem.
Thank you for any hints.
-D
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LEARN ABOUT V7
pam_motd
PAM_MOTD(8) Linux-PAM Manual PAM_MOTD(8) NAME
pam_motd - Display the motd file SYNOPSIS
pam_motd.so [motd=/path/filename] DESCRIPTION
pam_motd is a PAM module that can be used to display arbitrary motd (message of the day) files after a successful login. By default the /etc/motd file is shown. The message size is limited to 64KB. OPTIONS
motd=/path/filename The /path/filename file is displayed as message of the day. noupdate Don't run the scripts in /etc/update-motd.d to refresh the motd file. MODULE TYPES PROVIDED
Only the session module type is provided. RETURN VALUES
PAM_IGNORE This is the only return value of this module. EXAMPLES
The suggested usage for /etc/pam.d/login is: session optional pam_motd.so motd=/etc/motd SEE ALSO
motd(5), pam.conf(5), pam.d(5), pam(7), update-motd(5) AUTHOR
pam_motd was written by Ben Collins <bcollins@debian.org>. Linux-PAM Manual 09/19/2013 PAM_MOTD(8)