Before you can begin using the FTP service, you need to make some firewall adjustments and SELinux changes. Let’s start with the firewall rules. FTP uses both TCP ports 20 and 21, which you can open on the firewall.
Linux Admin / Linux Troubleshooting / Redhat Enterprise Linux 6 / Unix Intermediate
by Ramdev · Published April 27, 2021
In Red Hat Enterprise Linux 3/4/5, the default system log tool is syslogd which is provided by package sysklogd, but since Red Hat Enterprise Linux 6, the rsyslogd became the default. rsyslog package is also provided since Red Hat Enterprise Linux 5.2.
In case of printing issues such as no print output, print processes core and others, the first step is to configure the printing logging by inserting the following line into the syslog.conf file
1. How to re-install GRUB bootloader on the Master Boot Record(MBR) in rescue mode? The most common reason to reinstall GRUB is a disk failure and an accidental overwrite on MBR . In addition, there is also a hardware-specific reason that a SATA controller is not running in the...
DevOps: A very popular term now a days in IT industry which includes new revolutionary approach and tools like Jenkins, Travis, Chef, Ansible, Cfengine, Mesos, AWS, OpenStack, Dockers and many many more. Puppet is also one of the most popular tool used in the DevOps approach...
head command:: Output the first part of files. tail command:: Output the last part of files. split command:: Split a file into pieces. csplit command:: Split a file into context-determined pieces.
So far in our sample scripts, we terminated things pretty abruptly. When we were finished with our last command, we just ended the script. There’s a more elegant way of completing things available to us. Every command that runs in the shell uses an exit status...
Blog for Unix Admin / Solaris Admin / Solaris Packages & Patching
by Ramdev · Published April 21, 2021
Suppose you know the name of a file you need, but don’t know what package it belongs to. Knowing the package name can help you when installing missing software. If you have a system on which the needed file exists, you can use one of below two...
Grub Security Authentication and authorization in GRUB By default, the boot loader interface is accessible to anyone with physical access to the console: anyone can select and edit any menu entry, and anyone can get direct access to a GRUB shell prompt. For most systems, this...
The following errors could be seen when a filesystem is full:
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