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Using su in ksh script
- Thread starter new2unix
- Start date
You can do things like this:
su -c "cat /etc/shadow"
su - -c "some_prog_that_needs_roots_env"
in your script.
Another way to do more complex interaction is to use Expect ( ) to manage the session to some point. That's rarely necessary.
The man page for su on your system may give you other options of interest.
If you'd rather avoid the prompt entirely, you can use a suid program instead, or the "sudo" program can be used. The functionality of sudo may be called something different on your platform- on SCO it's "asroot", Unixware has the same concept administered through "tfadmin" and "adminuser".
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
su -c "cat /etc/shadow"
su - -c "some_prog_that_needs_roots_env"
in your script.
Another way to do more complex interaction is to use Expect ( ) to manage the session to some point. That's rarely necessary.
The man page for su on your system may give you other options of interest.
If you'd rather avoid the prompt entirely, you can use a suid program instead, or the "sudo" program can be used. The functionality of sudo may be called something different on your platform- on SCO it's "asroot", Unixware has the same concept administered through "tfadmin" and "adminuser".
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
BTWE, I assumed that you wanted to su to root, in part of my answer above, but the rest of it applies to any username.
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
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- Jan 1, 1970
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check out expect or, have your admin setup a sudoers file to allow you to execute a command as another user
- Thread starter
- #5
Thanks!
Actually, I need to "su - <username>" to different userid and execute the .profile in order to execute a script that, normally, would run ok when log in manually as that user but failed to run as a crontab job.
I will ask our administrator to see if the sudoer can be set up.
Mike
Actually, I need to "su - <username>" to different userid and execute the .profile in order to execute a script that, normally, would run ok when log in manually as that user but failed to run as a crontab job.
I will ask our administrator to see if the sudoer can be set up.
Mike
???
You can do
su - username -c "some command, script or whatever"
I'm sorry you didn't understand that.
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
You can do
su - username -c "some command, script or whatever"
I'm sorry you didn't understand that.
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
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are you saying you can su -username -c in a script?? I don't think you can do that withouth the help of a language like expect because you'll be prompted for a password , however sudo can execute a command or a script from within a script by doing it like this:
/usr/local/bin/sudo -H -u usertorunas command
/usr/local/bin/sudo -H -u usertorunas command
Yes, you can use that in a script.
Unless you mean an unattended script- you can't program the password into this, no. For that you need expect or sudo.
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
Unless you mean an unattended script- you can't program the password into this, no. For that you need expect or sudo.
Tony Lawrence
SCO Unix/Linux Resources tony@pcunix.com
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thanks, thats what I thought the only way I know to "automate" su in a script is with using expect thought I might have missed the boat or something
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