If you’re looking for a quick way to keep your CentOS machine patched at all times, become friends with yum-cron.

To install, in terminal, use:

#yum -y install yum-cron

The -y forces the install, answering any Yes / No “are you sure” questions.

Once installed, be sure to start the service using:

# systemctl start yum-cron.service

You can verify the status (make sure it’s running) using:

# systemctl status yum-cron.service

Output should look something like:

yum-cron.service – Run automatic yum updates as a cron job
Loaded: loaded (/usr/lib/systemd/system/yum-cron.service; enabled; vendor preset: disabled)
Active: active (exited) since Mon 2016-11-07 19:16:01 UTC; 2s ago
Process: 5385 ExecStart=/bin/touch /var/lock/subsys/yum-cron (code=exited, status=0/SUCCESS)
Main PID: 5385 (code=exited, status=0/SUCCESS)

Last step is to make sure it’s enabled, this will make sure it restarts in the event the machines reboots later.

# systemctl enable yum-cron.service

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If you’re working in linux you will be introduced to writing shell scripts at some point. When you do, you’ll become very familiar with the echo.

If you open your terminal, and run an echo command it’ll literally echo whatever you put after the echo:

$ echo "Hello World" Hello World

Continue reading “How do you add color or bold the echo outputs in a shell script?”

Sometimes you need to compress an entire directory, but sometimes you want to ignore specific file types.

Here is a basic command that you can use to remove specific file types before you compress it. In this example we use the find command to look for, and ignore, all image file types. That then gets piped into the tar command:

Continue reading “Tar (Compress) a Directory without Images via Terminal”