Recently I was working on an issue where an application was not retaining the umask setting set in the root users profile or /etc/profile. After looking into the issue a bit it seemed that the application in question only applied the umask setting that was set in /etc/bashrc and would not even accept the values being the applications own start scripts.
After doing a bit of researched I learned a little bit more about what exactly these files do, the differences between them and when they are executed....
In the office I use Red Hat quite often and one of the quicker ways to provision a Red Hat server is via kickstart. There are many ways to reach a kickstart file during initial install (NFS, HTTP, FTP) but one of the ways I commonly use is to put the file on the installation DVD itself.
The below steps are what I use to add a custom directory to the installation iso file....
Are you tired of trying to memorize tons of passwords on different systems? Or do you simply want to have a faceless user SSH between two systems without being asked for a password? Well you are in luck because today we will be covering SSH keys.
SSH Servers have the ability to authenticate users using public/private keys. In the case of pass-phrase less keys this allows users to ssh from one system to another without typing a password....
Recently while working on a system that uses EMC PowerPath, I ran into a little issue after rebooting.
The Issue fsck.ext3: No such file or directory while trying to open /dev/emcpowera1 /dev/emcpowera1: The superblock could not be read or does not describe a correct ext2 filesystem. The Cause The root cause of this issue is pretty simple when a Linux system boots it performs file system checks on file systems listed within the /etc/fstab file....
Backups are important, whether you are backing up your databases or your wedding pictures. The loss of data can ruin your day. While there is a huge list of backup software to choose from; some good, some not so good. One of the tools that I have used for years is rdiff-backup.
rdiff-backup is a rsync delta based backup tool that both stores a full mirror and incremental changes. It determines changes based on the rsync method of creating small delta files, which allows for rdiff-backup to restore files to any point in time (within the specified retention period)....