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1. UNIX for Beginners Questions & Answers
Just learning about the privilege escalation method provided by setuid. Correct me if I am wrong but what it does is change the uid of the current process to whatever uid I set. Right ?
So what stops me from writing my own C program and calling setuid(0) within it and gaining root privileges ?
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2. Shell Programming and Scripting
Hi,
I have a perl snippet that call a select query with a bind variable,when i compile the script I'm unable to get the query output.
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3. Shell Programming and Scripting
Hi Folks,
I have 2 perl scripts and I need to execute 2nd perl script from the 1st perl script in WINDOWS.
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main.pl
===========
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4. Shell Programming and Scripting
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5. Shell Programming and Scripting
Hello All
I am facing an issue
The unix script is running fine in unix environment which uses ssh connection but when I try to run the same in informatica environment (same server where I was running the unix script manually successfully) its showing the below error
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6. Shell Programming and Scripting
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7. Programming
Hi All,
This Monday 15th March 2010, i have faced a weired issue with my Perl script execution, this script is scheduled to run at 1 minute past midnight on daily basis ( 00:01 EST ) generally for fetching previous business date , say if it is Monday it should give last Friday date, for Tuesday... (0 Replies)
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8. Shell Programming and Scripting
Hi All,
I have been given a perl script to modify but which is not running completely.And it is not showing any errors also.
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print "1 - Inquiry";
print "\n";
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9. Shell Programming and Scripting
Hey fellows,
i've got a probkem while executing a command through a scheduled at-job;
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10. Shell Programming and Scripting
Hi,
How can i execute .profile from a perl script
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Please provide help
Your help is greatly appreciated
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SETUID(1) General Commands Manual SETUID(1)
NAME
setuid - run a command with a different uid.
SYNOPSIS
setuid username|uid command [ args ]
DESCRIPTION
Setuid changes user id, then executes the specified command. Unlike some versions of su(1), this program doesn't ever ask for a password
when executed with effective uid=root. This program doesn't change the environment; it only changes the uid and then uses execvp() to find
the command in the path, and execute it. (If the command is a script, execvp() passes the command name to /bin/sh for processing.)
For example,
setuid some_user $SHELL
can be used to start a shell running as another user.
Setuid is useful inside scripts that are being run by a setuid-root user -- such as a script invoked with super, so that the script can
execute some commands using the uid of the original user, instead of root. This allows unsafe commands (such as editors and pagers) to be
used in a non-root mode inside a super script. For example, an operator with permission to modify a certain protected_file could use a
super command that simply does:
cp protected_file temp_file
setuid $ORIG_USER ${EDITOR:-/bin/vi} temp_file
cp temp_file protected_file
(Note: don't use this example directly. If the temp_file can somehow be replaced by another user, as might be the case if it's kept in a
temporary directory, there will be a race condition in the time between editing the temporary file and copying it back to the protected
file.)
AUTHOR
Will Deich
local SETUID(1)