Linux – SU and Run Command Using Expect

bashexpectlinuxsu

I want to su to another user, using expect, and then run a graphical program as that user. I am using kcalc to test with:

#!/usr/bin/expect
set timeout 20
spawn su dummy
expect "Password:"
send "PASS\r";
send "kcalc\r"

I also tried eliminating the last line and changing the su to 'su dummy -c kcalc', but that didn't work either. I appreciate any help.

Best Answer

Instead of leaving account passwords sitting around the file system, why not just create a sudo command to do specifically this, and grant it with the NOPASSWD option?

Related Solutions

OSSEC – What Causes Integrity Checksum Alert?

Two reasons are:

You've actually been hacked
Prelinking is enabled

You can disable prelinking by editing /etc/sysconfig/prelink from:

PRELINKING=yes

to:

PRELINKING=no

And running:

prelink -ua

Source: http://www.ossec.net/wiki/Know_How:Check_Sums

Linux – How to run a command multiple times, using bash shell

I don't think a command or shell builtin for this exists, as it's a trivial subset of what the Bourne shell for loop is designed for and implementing a command like this yourself is therefore quite simple.

Per JimB's suggestion, use the Bash builtin for generating sequences:

for i in {1..10}; do command; done

For very old versions of bash, you can use the seq command:

for i in `seq 10`; do command; done

This iterates ten times executing command each time - it can be a pipe or a series of commands separated by ; or &&. You can use the $i variable to know which iteration you're in.

If you consider this one-liner a script and so for some unspecified (but perhaps valid) reason undesireable you can implement it as a command, perhaps something like this on your .bashrc (untested):

#function run
run() {
    number=$1
    shift
    for i in `seq $number`; do
      $@
    done
}

Usage:

run 10 command

Example:

run 5 echo 'Hello World!'

Best Answer

Related Solutions

OSSEC – What Causes Integrity Checksum Alert?

Linux – How to run a command multiple times, using bash shell

Related Topic