Linux, Ubuntu, Debian, Mint, CentOS Tutorials
Linux provides the rmdir command in order to delete a directory. But while using the rmdir command we may get an error like “rmdir: failed to remove ‘nmap’: Directory not empty”. This is caused by a non-empty directory that contains child directories and files. But we can remove this directory by forcing removal with different … Read more
Bash provides very similar features to the programming languages. Concatenating strings are one of the most popular features of the bash. The string concatenation is simply joining multiple strings together or adding all strings into the first string. There are different methods for concatenating strings in bash and we will examine some of them. Concatenate … Read more
Directories are used to store other directories and files in a hierarchycal way. Some time we may need to move directories to the different paths or inside another directory. Linux provides the mv command in order to move directories. There are different ways to move directories in Linux like multiple move, verbose move, approve every … Read more
The awk is a popular command used to manipulate the text or command output. The print is a subcommand provided by the awk in order to print data to the standard output. The print subcommand can get different parameters where $2 is one of them. In this tutorial, we examine what awk ‘{ print $2}’ … Read more
Zip is one of the most popular archives or compression formats and algorithms. The zip is used to compress data into a single file. Multiple files or folders can be zipped into a single zip file. In this tutorial, we examine different cases to unzip files in Linux. Install unzip Command In most of the … Read more
The sed command is an important command used to edit files or command outputs. The sed can be used to find and replace strings for a file easily via the command line interface. The sed name comes from the Stream Editor which provides advanced features to work with file contents. In this tutorial, we examine … Read more
awk is a popular Linux and Unix to work with text files and command output by manipulating them. While using the awk command it can be useful to add line numbers. This can be especially beneficial for the source codes or configuration files. In this tutorial, we examine how to print line numbers in awk … Read more
Linux is a file-based operating system that contains a lot of files of different sizes. During daily usage, a lot of files are created or downloaded by systems or users. This consumes a lot of disk space which results in storage errors and warnings. We can search and find big or large files using different … Read more
The awk is a popular command line tool used to read content like a text file and search and select specific parts of the file. As Linux is a text-based operating system we may need to get some parts of the text files like the last column of the text file. The awk command can … Read more
Linux is a secure operating system that uses file and directory permissions to allow and deny different access types. In general, a file or directory has 3 operations named read , write and execute . These operations permissions can be set according to the different users or user groups. The chmod command is used to … Read more