The Linux cal command is used to display a calendar in the terminal. By default, it displays the current month’s calendar with the current day highlighted. It can also display calendars for specific months and years by specifying them as arguments. The cal...

The Linux date command is used to display or set the system date and time. When used without any options, it displays the current date and time in the default format. The command can also be used to set the system date and time by specifying the desired date and time...

The Linux “uname” command is used to display system information about the operating system and the hardware it is running on. It can be used to retrieve information such as the kernel version, the machine hardware name, the operating system release, and...

The Linux “df” command is used to display the amount of disk space available on a file system. It shows the total size of the file system, the amount of space used, the amount of space available, and the percentage of space used. The command can be used...

The Linux “du” command is used to estimate the disk space usage of files and directories. It displays the size of each file and directory in a specified location, including the total size of the directory. The command can be used with various options to...

The Linux head command is used to display the first few lines of a file. By default, it displays the first 10 lines of a file, but this can be changed using the -n option followed by the number of lines to display. The head command is often used to quickly preview the...

The “more” command in Linux is used to display the contents of a file one screen at a time. It is often used to view the contents of large files that cannot be displayed on a single screen. When the “more” command is used, the contents of the...

The Linux fg command is used to bring a background process to the foreground. When a process is running in the background, it is not visible on the terminal and does not receive input from the user. The fg command allows the user to interact with the process by...

The Linux kill command is used to terminate a running process by sending a signal to it. The signal can be specified by its signal number or name, and the process can be identified by its process ID (PID) or by its name. The default signal sent by the kill command is...

The Linux top command is a system monitoring utility that displays real-time information about the system’s processes and resource usage. It provides a dynamic view of the system’s performance, including CPU usage, memory usage, and system load. The top...