I want to search and replace specific value in a file, here is the content of the file I want to replace DocumentRoot /var/www/html with DocumentRoot /var/www/html/centos I tried the following This is not working, can someone point me to the right direction. Thanks Answer The line you are trying to replace is…
Tag: linux
Can resource attributes depend on file-presence?
I’m writing a module, that will provide for mirrored yum-repositories on our network. The single server will host the mirrors offering them to other hosts (and itself). I have a problem with the initial chicken-and-egg — the first download may not happen for a while, but, if I enable a new reposit…
ICBC Payment Gateway – PHP infosec.so Dynamic Shared Libraries [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 years ago. Improve this question ICBC Payment Gateway – PHP infosec.so Dynamic Shared Libraries Beginning I’m going to …
Broken encoding in npm test output triggered by Jenkins running in docker
I’ve been with a big headache for months. We’re working with a continuous integration pipeline and one of the steps is an automated test triggered by npm test, which will take place inside a jenkin’s slave running in a docker container, Jenkins itself is in another container. During the buil…
in Bash Script, how to read a file and split all lines into a two-dimensional array
Content of the file: How to read the file and split all lines into a two-dimensional array? like java. Like: thanks. Answer GNU bash has no two-dimensional array. A workaround is an associative array. See: help declare and man bash
Using the setuid bit in Linux
I have this C file: I compile it, set the UID and GID both to root and set the setuid bit, so that it looks like this: However when I call $ ./a.out I still get: What am I doing wrong? Answer The real user ID is still the user that called the program, but the effective user ID is
How to move window offscreen with wmctrl
I am trying to programmatically move a window so that it is partially on screen. For instance, clicking the VLC title bar and dragging it so that only half the window is visible works just fine. When I output the results of wmctrl -lG this works just fine: However, when I then move it back on screen and try a…
Shell substring with sed in a variable
I have tried this command in bash linux The output is value. But if I put it in a variable, it doesn’t work. For example: The output is nothing. What wrong? Answer Do it like this:
QThreads using MinGw doesn’t work properly under windows
I’m developing a large optimzation tool using Qt. For a better CPU usage I use QThreads. Then I move worker objects (derived from QObject, containing non QObject data members) into the threads. Everything looks fine, builds fine and runs smoothly on Linux using GCC and Qt 4.8 However using MinGw using Q…
Print error for missing argument
I am trying to write a script which will check number of arguments for first and second number; if both variable entered, it will do the calculation; if one argument is missing, it will print error message. Here what I’ve done so far: I am always getting error message even though I enter both of the num…