enable.sh

#!/bin/sh

# A script that enables snoopy system-wide.
# You have to run this script as a privileged user.



### Where is the library installed?
LIBDIR=$1
if [ "x$LIBDIR" = "x" ]; then
    echo "ERROR: No argument given, libdir expected"
    exit 1
fi



### Check snoopy installation
if [ ! -x $LIBDIR/snoopy.so ]; then
    echo "ERROR: $LIBDIR/snoopy.so is not installed or is not executable"
    exit 1
fi



### Check user that is running this script
touch /etc/ld.so.preload
if [ ! -w /etc/ld.so.preload ]; then
    echo 'ERROR: /etc/ld.so.preload not writable - are you running this script as a unprivileged user?'
    exit 1
fi



### Do the actual install
if [ "`grep -c "^$LIBDIR/snoopy.so"   /etc/ld.so.preload`" = "0" ]; then
    echo "$LIBDIR/snoopy.so" >> /etc/ld.so.preload
    echo "Snoopy is now enabled in /etc/ld.so.preload."
    echo "Check your syslog files for output."
else
    echo "Snoopy is already enabled in /etc/ld.so.preload."
    echo "Check your syslog files for output."
fi