On UNIX systems, there is one very ancient command called dd. It is designed to copy something somewhere byte-by-byte we will learn How to use dd command in Linux in this article.[Read more…] about Dd Linux command and everything related to it
How to fix permissions denied in Kali Linux (Ubuntu,Linux Mint,Fedora)
Linux Command Line Cheat Sheet
The most essential Linux commands
Keep this Linux cheat sheet on your desk printed,
it will help you to learn them quickly and become a Linux expert very soon.
Click on the image to open at full size
The linux ls command lists files and directories within the current working directory.
ls - directory listing ls -al - formatted listing with hidden files
2) The cd Linux command changes the current directory in Linux and can toggle between directories conveniently.
cd dir - change directory to dir cd - change to home
3) The pwd Linux command (print working directory) command displays the name of the current working directory.
pwd - show current directory
Linux bc command calculations
bc utility is surely one of the underdogs when it comes to calculations on command line.
It’s a feature rich utility that has its own fan base but needs time to get comfortable with
- bc is included with (almost?) all Linux distros as standard, as well as (again, almost?) all Unices.
- Results from calculations in some proprietary flavours of
bchave up to 99 decimal digits before and after the decimal point. This limit has been greatly surpassed in GNU
bc. I don’t know what that limit is, but it’s at least many, many tens of thousands. Certainly it’s more than any GUI-based calculators (I’ve used) could accomodate.
- You may also find yourself working in an environment where you simply don’t have access to a GUI.
- The syntax for basic sums is almost identical to Google’s calculator function, so you can learn how to use two utilities in one go!
basename command in Linux
basename command in Kali Linux
Basename is a simple command which returns the file name string without any path info and it is mostly used in shell scripts.
It can also remove the file extension, and return only the file name without an extension.
The syntax of basename command is as follows,
basename String [ Suffix ]
basename OPTION string – input string Suffix – string needs to be removed from the input
support multiple arguments and treat each as a NAME.
remove a trailing suffix SUFFIX, such as a file extension.
separate output with NUL rather than a newline.
display help information and exit.
output version information and exit.
Outputs the string “sort”.
basename include/stdio.h .h
Outputs the string “stdio”.
basename -s .h include/stdio.h
Outputs the string “stdio”.
basename -a any/str1 any/str2
Outputs the string “str1” followed by the string “str2”.