egrep valid ip address

May 20, 2013

Example to egrep valid ip address To egrep all valid ip addresses in current directory: egrep […]

neo4j SSL howto

May 2, 2013

Getting SSL to work with neo4j can be very frustrating.  The crux of the problem is […]

Overwrite File with multi-line text

append text to end of file with cat

January 17, 2013

Objective: Append multiline text with cat Examples Replace contents of /etc/apache2/mods-available/geoip.conf cat <<‘EOF’ > /etc/apache2/mods-available/geoip.conf <IfModule […]

linux view disk space usage

November 12, 2012

Disk Space Usage Visual Tools Some great tools for viewing disk space usage are: pydf (essential […]

redhat add multiple users

September 13, 2012

useradd script to add multiple users to a system and force them to change their password […]