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This article shows you how to change the TCP established value in Linux systems
The default value for the “TCP Established timeout” on a Linux server is 5 days. To bring down this value (in this example, we are changing the value to 5 hours), do the following steps:
The following are generic steps to recover text files.
1.First use wall command to tell user that system is going down in a single user mode:
# wall
System is going down to …. please save your work.
dig (domain information groper) is a network administration command-line tool for querying Domain Name System (DNS) name servers.
To create FTP accounts, first click on the “FTP Menu” icon in the main control panel screen.
First, select a FTP username. In the above example, we chose “test.” Next, enter a password. Then, select the access level of the FTP account.
The command rpm -V (The options -y and –verify are equivalent) verifies an installed package.
The purpose would be to see if the system configuration accurately reflects the contents of the RPM database. If the system configuration doesn’t match the database, then we can reach one of two conclusions:
The whoami command print the user name associated with user id which is login in current session.
Command:
# whoami
To install Korn shell in Linux .follow the given below steps:
1.Login as root.
2. Install ksh package
Login as root, download the latest version from http://www.rfxn.com/downloads/lsm-current.tar.gz.
Run the command below:
# wget http://www.rfxn.com/downloads/lsm-current.tar.gz
The screen utility allows you to have multiple logins on just one terminal. Screen is useful for users who telnet into a machine or are connected via a dumb terminal, but want to use more than just one login.
Install the screen package if you need a screen manager that can support multiple logins on one terminal.
