Bug in srvrpowerctrl-setup.sh, line 167

[epoch1970]

$ uname -a
Linux montreux 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u4 (2016-02-29) x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 8.3 (jessie)
Release: 8.3
Codename: jessie

Line 167 in the setup script:
SLIMUSERID=$(ps -fp "$SLIMSERVICEPID" | grep -v 'UID' | sed -n -e 's/^([[:alnum:]])[[:blank:]].*$/\1/p')
fails to capture the entire user name (that prints as "squeeze+" on my system), then fails further validation and ends undefined.

Consequence: corrupted sudoers file with username missing from the new entries added by the script.

I corrected the issue replacing the line with:
SLIMUSERID=$(ps o user:25= "$SLIMSERVICEPID")

HTH