Skip to main content

Viewing files with line numbers in Linux terminal

 Reading files is basic and a must when working on the terminal in Linux or command line.

There are a lot of ways to do this, a simple task but quite a few ways to accomplish it.

Nano, vi/vim the most common editor in Linux that is part of the package in most Linux flavors if not all.

In nano editor, while the file is open pressing "alt + n", will display the line numbering on the left side of the screen.

Example image:


In vi or vim, opening the file and typing the command: "set nu" or "set number" will also view the lines on the left side of the screen.

Example image:

 

Or from the command line itself using "cat -n any_file_name.txt" will also view line numbers the -n is a parameter on cat to view or include the line numbers when displaying the file.

Example image:

less -N, command will also produce same result.

Or just use nl, "man nl" shows: 
NAME   
    nl - number lines of files

It comes pre-installed in almost any Linux flavors, Netbsd, Freebsd and even Unix.

Just type nl any_file.txt, no need for any parameters. And it will show the file with line numbers.

Example image:


That's it no need to remember any parameters, just two letters: "nl plus_any_file_to_view.txt"

It's quite useful, when trying to check if let's say some error on a Python file or Bash Script on a particular line number, and see whether it's just a semi-colon, or a space indentation that is causing the issue.


Till next time, keep learning and exploring.




Always remember to Pray, whether life is good or life is hard or no matter whether it make sense or not. God is always listening.
And remember Sin is like a credit card enjoy now, Pay/Suffer later.
Don't be afraid to repent though, God is merciful. 
Fiat Voluntas Tua | Catholic Prayers & Quotes

Labels:

Comments

Post a Comment

Popular posts from this blog

Print error 016-799 - Fuji Film Xerox

016-799 Fuji Xerox or Fuji Film print error code. That shows a description error as “Print instruction Fail detected in decomposer.” The error code and error description are alien languages for users and even system administrators who are not familiar with Fuji Xerox error code. The error code is quite simple and easy to fix, if the job print goes to the printer but print out doesn’t come out. So, basically the print job was received by the printer, but the printer just doesn’t know what type of paper or what size to use or which tray to utilize for the print out. In some instances, this is just a paper mismatch but the error description; if using Windows 10 to print does not exactly points to what is the issue. First thing to check, is the paper size selected by the user to print. Example, if the printer configuration is A3 and A4 sizes only. But then the person printing the file accidentally chooses “A4 Cover” then this error 016-799 will occur. ...
6 comments
Read more

PowerShell Match Drive Letter to Volume ID in AWS

Matching AWS volume ID to its corresponding Windows drive letter is an easy task using PowerShell. Win32_DiskDrive holds the info for the volume-ID. Here’s the script, below enjoy 😊 $get_disks = gwmi -query "SELECT * FROM Win32_DiskDrive" ForEach ( $disk in $get_disks ){         $get_partitions = gwmi -query "ASSOCIATORS OF {Win32_DiskDrive.DeviceID=' $( $disk . DeviceID) '} WHERE AssocClass = Win32_DiskDriveToDiskPartition"     ForEach ( $partition in $get_partitions ){         $get_logicaldisks = gwmi -query "ASSOCIATORS OF {Win32_DiskPartition.DeviceID=' $( $partition . DeviceID) '} WHERE AssocClass = Win32_LogicalDiskToPartition"          ForEach ( $logicaldisk in $get_logicaldisks ){         $insert_the_dash = ( $disk . SerialNumber) . Insert( 3 , "-" ) #insert dash to match AWS v...
Post a Comment
Read more

PowerShell get Printer Name and Driver path

Descriptive Printer name is quite useful especially if managing quite a few printers on a network. Knowing the driver path of the printers is also useful, the file can be copied and can be used to install on another computer if necessary. Here’s the PowerShell code: Get-WmiObject -Query "Select DriverPath, Name from Win32_printerdriver" -Namespace 'Root\CIMV2' | Select Name , DriverPath | ft -wrap Sample Output: Cheers..till next time. :) ================================ Free Android Apps: Click  links below to find out more: Excel Keyboard guide: https://play.google.com/store/apps/details?id=chrisjoms.myexcelapplicationguide Heaven's Dew Fall  Prayer app for Android : https://play.google.com/store/apps/details?id=soulrefresh.beautiful.prayer Catholic Rosary Guide  for Android: http...
Post a Comment
Read more