Head is another way to view text file in Linux. You can use head command to print a specified number of lines from the beginning of the file. Let’s learn how to use the head command in Linux with practical examples.
[FILE] head by default, prints the first 10 lines of each FILE to standard output. With more than one FILE, it precedes each set of output with a header identifying the file name. If no FILE is specified, or when FILE is specified as a dash (“-“), head reads from standard input.
What is the difference between head and tail command in Linux?
It is the complementary of Tail command. The head command, as the name implies, print the top N number of data of the given input. By default, it prints the first 10 lines of the specified files.
This page covers the GNU / Linux version of head. Head, by default, prints the first 10 lines of each FILE to standard output. With more than one FILE, it precedes each set of output with a header identifying the file name. If no FILE is specified, or when FILE is specified as a dash (” – “), head reads from standard input.
What is the purpose of the command line in Linux?
The command line is provided by the shell, and the terminal window lets you access the shell. Shells also allow you to parcel up a collection of commands into a text file called a script. All the commands in the script are executed for you each time you run the script. Scripts deliver efficiency, repeatability, and convenience.
Bash linux shell what does it do?
Bash shows you the process ID of what launched, and then returns you to the command line. You can then continue to use your terminal window. Many Linux commands accept a file as a parameter and take their data from that file. Most of these commands can also take input from a stream.
Bash is a program that reads command and executes them. It can read them from a file, or you can type them from an interactive prompt. When you run a terminal, it’s simply a window that runs bash in interactive mode, possibly reading some initialization code first.
Yet another query we ran across in our research was “What is a shell in Linux?”.
Let us dig a little deeper! a shell is a command interpreter. It scans what you’ve typed and picks out the commands, directory names, file names, and program names so that it can figure out what you’re trying to achieve. People often use the phrases “terminal windows,” “command line,” and “shell” interchangeably, but they’re three distinct things.
There are a set of characters the Bash shell treats in two different ways. When you type them at the shell, they act as instructions or commands and tell the shell to perform a certain function. Think of them as single-character commands. Sometimes, you just want to print a character and don’t need it to act as a magic symbol.