Category: Linux

Linux RedHat

Checking what processes need to be restarted after a system upgrade

/ by Tim Groeneveld | 2 Comments on Checking what processes need to be restarted after a system upgrade

With updates going on in the last couple of months for various packages, such as OpenSSL and GLibC which have fixed a number of important security vulnerabilities, I thought I might share a one liner that might save you one day. sudo lsof -n | grep -v \#prelink\# | grep -e '\.so' | grep -e […]

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Linux PHP

Using files or Semaphores for long running process locks with PHP

/ by Tim Groeneveld | 2 Comments on Using files or Semaphores for long running process locks with PHP

Last week I spoke at SydPHP, which was hilariously horrible due to my lack of public speaking skills. During my Introduction to Laravel & Composer there was a very interesting question posted asking about an issue that he came across while developing a cron that was running on his server. The process was set to […]

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Documentation Linux

Have ssh-agent load on all new shells

/ by Tim Groeneveld | Leave a Comment

I love ssh-agent, but always found that running source ~/.ssh.agent annoyed me! That was before I wrote this code, which I absolutely love: source ~/.ssh.agent PID=$SSH_AGENT_PID if [ -f /proc/$SSH_AGENT_PID/cmdline ]; then CMD=`cat /proc/$SSH_AGENT_PID/cmdline`; if [ "$CMD" != "ssh-agent" ] ; then PID=0 fi else PID=0 fi; if [ "$PID" -eq 0 ]; then ssh-agent […]

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Computers Linux

RHEL, Scientific Linux & CentOS: A sad story indeed

/ by Tim Groeneveld | 1 Comment on RHEL, Scientific Linux & CentOS: A sad story indeed

I love RedHat Linux. I think it is a beautiful piece of engineering. Hundreds of thousands of man hours spent ensuring systems that have packages installed keep running. Continuously. One thing however that I have found is that my favorite RHEL clone for years, CentOS has been slacking. Bad. For example, RedHat Enterprise Linux 6 […]

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