I’m using node’s net-ping to enable my front end to ping by connecting to node via websockets. Because linux will only let root users send out ping requests I’m having to run the script via sudo. I’m not at all comfortable doing this but I don’t think I have very much choice. Wha…
Tag: linux
Upstart stop if running
I have a Jenkins job to stop a node application, deploy code, and start the application. The start/stop is done with an Upstart script. I use initctl stop node-App If the job is running, this works great. But if the app has died or is in a stopped state, the output is initctl: Unknown instance: This causes th…
How to grep a word inside xml files in a folder
I know I can use grep to find a word in all the files present in a folder like this But my current directory has many sub-directories and I just want to search in all xml files present in the current directory and its all sub directories. How can I do that ? I tried this But it searches for
Good way to debug stack value corruption
What is a good way to debug stack value corruption. In a program of mine sometimes the address of the this pointer gets changed after a method returns that does a shutdown on a file descriptor. I debugged the program for hours but I can not find the problem. What is a good method to find out what changes the
Where is the program or package gcjh?
I’m having trouble similar to Unable to build pdftk from source on fedora machine, but I’m having it on Ubuntu 13.04. I’ve install gcc-gcj, which provides gcj-4.8. I opened Makefile.Debian, and modified it as follows. So it finds the proper version of some of the GCC build tools: Next, I tri…
How does the fork() know whether it is in child process and in parent process? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 9 years ago. Improve this question When a fork() system call gets executed , the processor turns into kernel …
How to update memcached server in Linux
I have installed memcahced server in my machine So, I wanted to update it into 1.4.17 since it is the latest one. But, when I say yum update memcached, it yells like this. OS : Ubuntu 12.10 Result for aptitude show memcached command Answer Try running aptitude show memcached in the terminal. Then you might fi…
Generating Sencha Touch 2 app nullpointer error
I’m trying to generate a new app using the following: However, I get the following: The confusing thing is I already have previously generated apps. I don’t know why my attempts to create new ones are failing. NOTE: I tried upgrading Sencha but it does seems to have the desire effect as the follow…
How to execute a command on behalf of a user if login is denied
I need to run tomcat on behalf of tomcat user. But in /etc/passwd I have the following line: So when I try to do this: sudo su tomcat ./bin/startup.sh It complains about: su: /bin/nologin: No such file or directory How do I execute the command with proper permissions? Thanks in advance! P.S. I’m trying …
Run processes with priority from shell (not “nice” )
I am looking for the equivalent command to nice, but for setting process priority and selecting the scheduler to use. I need to be able to type (or include in a script) something like run-with-scheduler batch a-big-long-command, or run-with-scheduler round-robin priority 10 to set the process priority and sch…