1) What is the difference between awk and sed ? Both are tools that transform text. BUT awk can do more things besides just manipulating text. Its a programming language by itself with most of the things you learn in programming, like arrays, loops, if/else flow control etc You can "pr...
“sudo” provides you a robust and safe environment with loads of flexibility as compared to ‘su‘. Moreover “sudo” configuration is easy. Some Linux distributions have “sudo” enabled by default while most of the distros of today needs you to enable it as aSecurity Measure. To add an...
If you're a Linux user, you've probably seen references to both sudo and su. Articles here on How-To Geek and elsewhere instruct Ubuntu users to use sudo and other Linux distributions' users to use su, but what's the difference? Sudo and su are two different ways to gain root privile...
The article does NOT answer the question posed: What is the difference between “su” and “su –“? E.g., on Sparky Linux, if you switch to root in a terminal by “su” then the root password, you will NOT get access to “swaplabel“. One has to switch to root as “su –”...
For finding difference between two versions of a file on Linux, you can use any one of the 4 tools explained in this article — diff, colordiff, wdiff, and vimdiff. The screenshots provided for these tools shows the difference between the following two empfile1.txt and empfile2.txt. ...
shell+sed+awk严格的讲, shell不是一种编程语言, 但是shell有自己的控制流结构(判断,循环,选择),运算以及函数等编程语言特性, 加上shell命令组织在一起构成脚本, 能够完成一般编程语言做到的事情.sed和awk一般融入到shell里面应用, bash是shell的一种, 也是linux的默认shell. shell是linux内核和用户命令的沟通桥梁,...
awk grep sed 1. Overview In this article, we’ll go through the command-line tools grep, sed, and awk. In particular, we’ll study the differences in functionality among them. 2. Background When it comes to text processing in Linux, the three tools that come in pretty handy are grep...
Fig: Whole line difference in Vimdiff (click on image to enlarge) 2. Difference in partial line – Red Color If only a part of the line is different between the two files, the line will be highlighted in rose color, and the partial difference will be highlighted with red color as shown...
Learn 12 Practical Examples of Linux grep Command Conclusion Above highlighted are the differences between‘grep’,‘egrep’and‘fgrep’. Apart from difference in the set of regular expressions used, and speed of execution, rest command line parameters remain same for all the three versions of grep...
When working withLinuxor any other operating system, you might encounter the termslocalhostand127.0.0.1quite often. They are closely related, but understanding the distinction between the two can help clarify many networking concepts. As someone with over 10 years of experience in Linux, I can exp...