Image Manipulation
![](http://linuxbeer.com/wp-content/uploads/2016/11/Imagemagick-logo-150x150.png)
rename all images in the current folder based on creation date
resize multiple jpg files
Updating openssl on RedHat 5.3
![](http://linuxbeer.com/wp-content/uploads/2017/02/redhat-150x150.png)
With the new heartbleed virus we need to update openssl.. and cleanup the un-needed 32bit
This system is registered to Red Hat Subscription Management, but is not receiving updates. You can use subscription-manager to assign subscriptions.
openssl.i686 0.9.8e-7.el5 installed
Random Apache shtuff
![](http://linuxbeer.com/wp-content/uploads/2013/12/apache_logo-150x111.gif)
[root@xxxxxxx ~]# service httpd restart
Stopping httpd: [FAILED]
Starting httpd: Syntax error on line 292 of /etc/httpd/conf/httpd.conf:
DocumentRoot must be a directory [FAILED]
This is due to selinux being enforced. Edit /etc/sysconfig/selinux, change to disabled and reboot.
...Read More »Change resolution of boot screen and console
in /etc/default/grub add the following two lines
GRUB_GFXPAYLOAD_LINUX=1024x768
and then run update-grub
...Read More »Perl commands
![](http://linuxbeer.com/wp-content/uploads/2017/02/perl-150x105.gif)
simple one liner password generator. thanks to http://sysadminsjourney.com
VI commands
![](http://linuxbeer.com/wp-content/uploads/2013/01/vim_edit-150x111.jpg)
search and replace a path with a variable
we want to change the following text
to
use..
Linux commands
![](http://linuxbeer.com/wp-content/uploads/2017/02/tux_edit-150x111.jpg)
These are commands I find useful..
get a list of all installed updates
get all CVE’s from all packages
Configure command for Moodle 2.0
![](http://linuxbeer.com/wp-content/uploads/2013/01/moodle-150x77.png)