How to analyse the mail log details – Exim? To play with email issues we’ve a good knowledge about the log file and different log line flags. We know the basics of exim MTA and its basic commands. We already discussed…
Author: Arunlal A
Senior System Developer at Zeta. Linux lover. Traveller.
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Happy coding and deploying!
15+ tar command usages with examples – Unix/Linux
tar command in Linux. This is one of the most commonly using Linux command. This is very similar to the ZIP concept in Windows platform, what we are using commonly to save multiple file together. The ‘tar‘ saves many files…
10+ useful grep command options with examples – Unix/Linux
The grep command is one of the most widely using Linux command. The name GREP is the abbreviation of Global Regular Expression Pattern. Yep! it’s pattern search tool under Unix. By-default the grep command lists all matching lines from the…
Mongodb wont start ERROR: child process failed, exited with error number 100
Mongodb: Actual error is “Insufficient free space for journal files“. Before discussing about the error, I will give you a short information about Mongodb. Mongodb is a free and open source software for platform document-oriented database. A document-oriented database is…
How to know the MySQL uptime from commandline – 3 Methods
MySQL uptime. In some situations, we need to check the uptime for MySQL in your server. We can not afford the downtime of a database engine. As a system engineer you must know the linux command-line options to find the…
How/command to block/unblock an IP address in your Linux server – IPTables command to block/unblock an IP
We have already discussed about the IPTables basics in Linux and also some common usages of it to secure your Linux server. By using iptables you can block particular IP address or a range of IP addresses on your server…
How to reset WordPress admin/users password from Linux command line?
WordPress reset password options.. We know how it can be done via PhpMyAdmin option in cPanel. We already discussed this in one of the previous post! Please check this post first, if you have a PhpMyAdmin panel and you’re comfortable with…