I’m entering the world of Linux and at work I’m using grep more and more. By doing that I’m figuring out that sometimes it’s not adequate for what I want. I was struggling with grep a few days ago and a colleague of mine who is a senior Linux admin, told me to use awk. … Read more
I am looking for an explanation of what happens in Linux when this key combination is pressed to change the current terminal. In particular, what software component intercepts this key combination and changes the terminal? Is it the kernel? If it is the kernel, could you provide the location of the source file which handles this?
If my desktop run out of memory and swaps a lot then I free or kill the application wasting my RAM. But, after that, all my desktop/applications have been swapped and are horribly slow, do you know a way to “unswap” (reload from swap space into RAM) my desktop/applications?
Suppose you have an alias go, but want it to do different things in different directories?
I have some database dumps from a Windows system on my box. They are text files. I’m using cygwin to grep through them. These appear to be plain text files; I open them with text editors such as notepad and wordpad and they look legible. However, when I run grep on them, it will say binary file foo.txt matches.
One program created lots of nested sub-folders. I tried to use command rm -fr * to remove them all. But it’s very slow. I’m wondering is there any faster way to delete them all? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve … Read more
I often want to feed relatively short string data (could be several lines though) to commandline programs which accept only input from files (e.g. wdiff) in a repeated fashion. Sure I can create one or more temporary files, save the string there and run the command with the file name as parameter. But it looks to me as if this procedure would be highly inefficient if data is actually written to the disk and also it could harm the disk more than necessary if I repeat this procedure many times, e.g. if I want to feed single lines of long text files to wdiff. Is there a recommended way to circumvent this, say by using pseudo files such as pipes to store the data temporarily without actually writing it to the disk (or writing it only if it exceeds a critical length). Note that wdiff takes two arguments and, as far as I understand it will not be possible to feed the data doing something like wdiff <"text".
I’m using Kali Linux but the apt-get install command is not working to install any application on my system. Mustafa1112221 I think it’s got something to do with my Kali Linux repository sources.list file. The file may be empty or the current repo address is wrong or experiencing a problem. Please, could someone provide me … Read more
The output from uname:
I’m trying to perform environment variable replacement through envsubst, but I want to only replace specific variables.