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...
Normally, tocompare two files in Linux, we use thediff– a simple and original Unix command-line tool that shows you the difference between two computer files; compares files line by line and it is easy to use, comes with pre-installed on most if not all Linux distributions. The question...
This is a key difference between su and sudo. Su switches you to the root user account and requires the root account's password. Sudo runs a single command with root privileges -- it doesn't switch to the root user or require a separate root user password. Ubuntu vs. Other Linux Distri...
As nouns the difference between yes and worm is that yes is an affirmative expression; an answer that shows agreement or acceptance while worm is...
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. ...
运营与运维的区别(Differencebetweenoperationandoperation andmaintenance) Differencebetweenoperationandoperationandmaintenance Tags:operationandmaintenance2010-01-2717:04 Operationisapopularterminrecentyears.ThenumberChina websitehasmorethanXXXmillion,thisrequiresthenumberof ...
First, based on the broadband that is typical of blast waves, the peak frequency of the P-wave was obtained in the time–frequency domain, taking advantage of the difference in the propagation speed of the P-wave, S-wave, and the surface wave. Second, the phase difference between two ...
There was a relatively weak correlation between ACH50 and the age of housing units (R2 = 0.40). The units did not comply with the airtightness requirement for the Passivhaus standard, which states that ACH50 should be less than or equal to 0.6 h−1 at 50 Pa [37]. 7 out of 14 ...
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,...