The devpts file system is a virtual file system in Linux used to provide access to the terminal’s pseudo-terminal master-slave pairs. To mount the devpts file system on /dev/pts, use the following command: mount -t devpts devpts /dev/pts This will mount the devpts file system on /dev/pts so that you can use pseudo-terminals in your … Read more
You can configure automatic logout in the bash shell by setting the TMOUT environment variable. The value of this variable specifies the number of seconds of inactivity after which the shell will log out automatically. To set automatic logout for your current session, you can use the following command: export TMOUT=300 This will set automatic … Read more
SSH X11 Forwarding can be slow, especially over long distances or low-bandwidth connections. To speed up SSH X11 Forwarding, you can make the following optimizations: Compression: Enable compression on the SSH connection by adding the -C option to the ssh command. $ ssh -C user@host Forwarding optimization: To optimize the X11 forwarding, add the following … Read more
To kill an unresponsive or hung SSH session in Linux or UNIX, you can use the following command: $ kill -9 <PID> Replace <PID> with the process ID of the SSH session. You can find the PID by using the following command: $ ps -ef | grep ssh This will list all the running SSH … Read more
exec-notify is a Linux kernel feature that provides a way for a process to receive notifications about the execution of a file. It can be used to monitor for security-related activities, such as when a user runs a suspicious or dangerous command, or when a file is executed that has been marked as potentially malicious. … Read more
In PHP, you can compare two text strings using the equality operator == or the identity operator ===. The equality operator == performs a loose comparison of two values, which means that it performs type coercion. For example, if you compare a string to an integer, PHP will convert the string to an integer before … Read more
You can kill a user session in Linux or UNIX by using the pkill command. pkill is a command-line utility that sends signals to processes based on the process name or process ID. To kill a user session, you need to find the process ID of the user’s shell and then use pkill to send … Read more
You can install the KornShell (KSH) in a Debian or Ubuntu Linux system using the following steps: Open a terminal. Update the package list by running the following command: sudo apt-get update Install the ksh package by running the following command: sudo apt-get install ksh Once the installation is complete, you can check the installed … Read more
You can create a text file using the cat command in the terminal of an Ubuntu Linux system as follows: Open the terminal. Type cat > filename.txt and press Enter. This will open a new file with the name “filename.txt”. Type the text you want to add to the file and press Enter after each … Read more
There are several commands that can be used to check the network connection in Linux, some of the most commonly used ones are: ping: This is a basic command that sends an echo request to a specified domain or IP address. It is used to check if the host is reachable and to measure the … Read more