All Tags | Linux and Python Tutorials

ip route add Tutorial for Linux

Thursday, Aug 8, 2024

Linux provides the ip route add command inorder to add new routes to the network configuration. Routes are used to specify the network paths to reach destination hosts and networks. Every network packet is redirected to the relevant network interface (ethernet or wifi) according to the specified routes or route table. Here are 20 examples of using the ip route add command to manipulate and configure routing tables in Linux:

@ İsmail Baydan

5 minutes read

Vi/Vim End Of Line

Thursday, Aug 8, 2024

Vim/Vi is very popular command line text editor for Linux. Vim/Vi provides different shortcuts for different operations. Jumping end of the line in Vim/Vi is popular operation and can be done with different shortcuts or command. In this tutorial we examine different ways to jump end of the line in Vim/Vi Move to the end of the current line: We can use the $ key directly jump to the end of the current line.

@ İsmail Baydan

3 minutes read

How To Check Disk Space In Ubuntu?

Thursday, Aug 8, 2024

Disk space usage should be monitored or checked periodically to prevent system failures and problems. Ubuntu provides different command in order to check disk space. These commands can be used used, free, cached disk usage in different units like MB, GB etc. Basic df command: The df command is the most popular and easy way to check disk space usage. df Displays the amount of disk space available on the file system.

@ İsmail Baydan

4 minutes read

How To Delete/Remove User In Ubuntu?

Thursday, Aug 8, 2024

Ubuntu provides deluser and userdel commands in order to delete/remove users. Even they are very similar they provide different features during user removal. In this tutorial we examine how to delete user in Ubuntu in detail. Basic user removal using deluser: The deluser command only deletes the user but does not deletes the users home directory. In the following example we delete the user named ismailbut the /home/ismail directory retained.

@ İsmail Baydan

3 minutes read

How to mkdir -p only if a directory does not already exist?

Wednesday, Aug 7, 2024

Linux bash provides the mkdir command in order to create directory. By default the mkdir command creates single directory but can not create child or sub directories. The mkdir -p command is used to create new directory with subdirectories or child directories. Create a single directory: You can create single directory with sub directories like below. mkdir -p /path/to/directory Create multiple nested directories: You can create single directrory with nested child directories.

@ İsmail Baydan

2 minutes read

How To Restart Postgresql?

Monday, Aug 5, 2024

Postgresql or postgres can be restart in different ways in different platforms and operating systems. To restart PostgreSQL, you can use the appropriate command based on your operating system. Here are the common commands for different systems: On Linux (systemd) Postgresql is mostly used with Linux or Unix operating systems and most modern Linux distributions use systemd to manage services. We can use the systemctl restart command in order to restart postgresql service.

@ İsmail Baydan

4 minutes read

How to append elements in Python tuple?

Monday, Aug 5, 2024

Tuples are used to store multiple elements in a single object. In order to use tuple we generally add, remove elements. Tuples in Python are immutable, meaning once they are created, their contents cannot be changed directly. However, you can create a new tuple that includes the elements of the original tuple along with the new elements you want to add. Here’s how you can do it: Using Concatenation You can concatenate the original tuple with another tuple containing the new elements.

@ İsmail Baydan

3 minutes read

How To Check If a File Exist In Shell?

Monday, Aug 5, 2024

In a shell script, you can check if a file exists using the test command or the [ ] notation. For example we need to check if a file exist and want to delete or rename it. Linux bash provides the test command in order to check file existance. Here are some examples of how you can do this: Using the test command: if test -f "filename"; then echo "File exists.

@ İsmail Baydan

3 minutes read

How To Ping In Linux?

Monday, Aug 5, 2024

Ping is a term, command and action used to check network connectivity. We can use the ping command in order to check Linux network connecvity.Pinging a host in Linux is a simple way to check the connectivity between your system and another network device. Here’s how you can do it: Open a Terminal: You can open the terminal from your applications menu, or by using a shortcut like Ctrl+Alt+T. Use the ping command: The basic syntax for the ping command is: destination can be a hostname, domain name or IP address.

@ İsmail Baydan

2 minutes read

Bash for Loop Tutorial With Examples

Saturday, Aug 3, 2024

Bash for Loop Linux bash provides for loop in order to itarete over different things in Linux and bash. We can use bash for loop in order to iterate over a command output which containts multiple items or execute a bash command with different arguments by providing arguments to for loop. for Loop Syntaxes The for loop has two popular syntax in order to be with bash. for VARIABLE in 1 2 3 4 5 .

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1 minute read