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#!/bin/sh
set -e
# try to insert the systemd entry to the "passwd" and "group" lines in
# /etc/nsswitch.conf to automatically enable libnss-systemd support; do not
# change the configuration if the lines already contain "systemd"
insert_nss_entry() {
echo "Checking NSS setup..."
# abort if /etc/nsswitch.conf does not exist
if ! [ -e /etc/nsswitch.conf ]; then
echo "Could not find /etc/nsswitch.conf."
return
fi
perl -i -pe '
sub insert {
my $line = shift;
# this also splits on tab
my @bits=split(" ", $line);
# do not break configuration if the line already references
# systemd
if (grep { $_ eq "systemd"} @bits) {
return $line;
}
# add systemd at the end
return $line . " systemd";
}
s/^(passwd:\s+)(.*)/$1.insert($2)/e;
s/^(group:\s+)(.*)/$1.insert($2)/e;
' /etc/nsswitch.conf
}
if [ "$1" = configure ] && [ -z "$2" ]; then
echo "First installation detected..."
# first install: setup the recommended configuration
insert_nss_entry
fi