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Shell Programming and Scripting

Can't do: su $user

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# 1  
Old 07-02-2010
Can't do: su $user
Hi all!

I need a script that first creates a list of all user in the system and then changes to each user to set some system settings.

So far I have this:
Code:
#!/bin/sh

ls /home/ > userList.txt

cat userList.txt | while read x; do
su $x //This gives me an error. "rrodrigues: command not found" (it's my user name)

#Settings

exit 
done

I though that was the right way...I also tried to use these quotes "" and these ''.
with the first I get the same error and with the '' I get the error unknown user id.

any help would be appreciated
thanks!
Last edited by vbe; 07-02-2010 at 11:22 AM.. Reason: code tags
# 2  
Old 07-02-2010
1) If you execute su, it will straight away prokpt you for the passwd... How do you intend to bypass that ?
2) You have something wrong somewhere else (typo or undisplayed char?) either you only partially gave you code and display output...
I tend to thing so, and believe you were prompted for a passwd then it displayed X lines similar to the error you mention

if you intend to use su, then use -c option
# 3  
Old 07-02-2010
use -c
Hi;

Try su $username -c command;I did as follows

Code:
ls -1 /home|while read IN; do su $IN -c whoami; done

output

Code:
abwilson
aparris
csteinma
dgeorges
djay
dpierrel
fdawaleh
fdjilani
jbaron
jdempsey
kbseabold
lauren_helpform
lbozidar
llschuh
mjoseph
mlavoie
mtrtest1
mtrtest2
mvaki
plchagnon
saaouine
salameri
sdrum
shuriyea
ssaji1
ssakhaf
tom
tomsawyer.is.back
tprand
tschreib

Syed
Last edited by pludi; 07-02-2010 at 01:19 PM.. Reason: code tags, please...
# 4  
Old 07-03-2010
I can see issues with the input stream from "while" clashing with reads from each terminal session.

Code:
I need a script that first creates a list of all user in the system and then changes to each user to set some system settings.

We must assume that you are logged in as "root" before starting this exercise.

It is not clear whether you wish to run a program while in the environment of each user or just to edit a flat file owned by that user in their respective account. i.e. Do you need the full user environment at the time of the edit?

Personally I would write a script to write a script, then execute that script. This method avoids the input from the while loop being read in error.
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