HowTo: Linux List Disk Partitions Command

How do I list all hard disk partitions under Linux operating systems? Usually, your hard disk drive divided into one or more logical disks called partitions. This division is described in the partition table found in sector 0 of the hard disk. The device is usually /dev/sda, /dev/sdb or so. A device name refers to the entire disk and the …

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Linux / UNIX – Display the permissions of a file

Q. How do I list or display the permission of a file using ssh? I don’t have GUI installed on a remote Linux computer. A.You need to use ls command with -l option. File access permissions are displayed in the first column of the output, after the character for file type. ls command List information about the FILEs. If no argument …

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Find out the spam mailing script’s location – Exim

The Exim mail server has a lot of options/commands to find out the details of spammers easily from the command line. Click this link “Spam Check” to get more ideas. We can find out the mail queue details, spam mail sender details, spam mail counts etc from the link I mentioned above. Here is a script/piped-command to find out the …

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List of cPanel Default Open Ports

This is a listing of all default open ports in cPanel server. You must open all of these ports in your server firewall to run the cPanel perfectly. These default ports are configured as opened in the firewall like CSF for a cPanel server. 20 FTP 21 FTP 22 SSH 37 rdate 25 SMTP 26 SMTP 110 POP3 143 IMAP4 465 SMTP TLS/SSL …

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Backup and Restore MySQL Database Using mysqldump

mysqldump is an effective tool to backup MySQL database. It creates a *.sql file withDROP table, CREATE table and INSERT intosql-statements of the source database. To restore the database,  execute the *.sql file on destination database. Using mysqldump, you can backup a local database and restore it on a remote database at the same time, using a single command. In …

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PHPMyAdmin – Unable to establish a PHP session

PHPMyAdmin error Have you ever come across the following error when you access PHPMyAdmin from cPanel. Access Denied Unable to establish a PHP session. If you believe that this is in error or inadvertent, contact your system administrator and ask them to review your server settings. Normally, you will get this error when the permission or ownership of the tmp folder …

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6 Linux Crontab Command Examples

Crontab command manages the cron table that is used by the cron daemon to execute the cron jobs. This article explains the various command line options of the crontab command.   1. Tweaking Other Users Crontab using Option -u -u stands for user. This should be followed by a valid username in the system. -u option alone doesn’t do anything. …

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