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snowman81

05-08-2008 12:18 PM

Using sudo in script

I have a simple script that echos a line into my fstab file. It's probably not safe but I just using it for testing. Anyway, the second line works but for some reason the third always says permission denied even though I know it is running as root. Any ideas?

Code:

 #!/bin/bash



echo "*******" | sudo -S mkdir /mnt/publicshare



sudo echo "//macx/swu /mnt/publicshare smbfs user,rw,noauto,username=swu" >> /etc/fstab

ntubski

05-08-2008 01:09 PM

In your script only the echo is run with root privileges, but the current shell is the one that writes to the file. What you need to do is run a subshell with sudo:

Code:

sudo bash -c 'echo "//macx/swu /mnt/publicshare smbfs user,rw,noauto,username=swu" >> /etc/fstab'

snowman81

05-08-2008 01:28 PM

Yup, that was my problem, thanks.

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