Execute a command on user logon
In Linux desktop system, I want to execute a command when the user logs in.
Unix & Linux
Parallel execution of bash script
I have a table URL_Experiment in my database (mySQL database). I have 2 million URL links in this table.
Get path of current script when executed through a symlink
I have a utility consisting of a couple of directories with some bash scripts and supporting files that will be deployed to several machines, possibly in a different directory on each machine. The scripts need to be able to reference paths relative to themselves, so I need to be able to get the path to the file that’s currently being executed.
How to scroll large datafile while keeping header
Suppose I have some large datafile, which overflow the screen in both vertical and horizontal direction. How can I browse this file, while the header-lines stay on the screen?
How to stop MAC address from changing after disconnecting?
so i change my MAC address with macchanger -A wlp68s0b1 at boot with crontab,
here is what happens when i disconnect and reconnect :
How to use flock and file descriptors to lock a file and write to the locked file?
I have a bash script that makes a cURL request and writes the output to a file called resp.txt. I need to create an exclusive lock so that I can write to that file and not worry about multiple users running the script and editing the text file at the same time.
How to count the number of a specific character in each line?
I was wondering how to count the number of a specific character in each line by some text processing utilities?
How to script make menuconfig to automate Linux kernel build configuration?
I want to automate a Linux build but eventually get to a point where I need to run what seems to be a very manual step: make menuconfig. This seems to synchronize configs between the OS and kernel configs?
“rsync: failed to set permissions on …” error with rsync -a or -p option
When I use the -a option as is asked and answered in Preserve the permissions with rsync, I got a lot of “rsync: failed to set permissions on” errors.
change /proc/PID/environ after process start
$ k=v p & [1] 3028 is there any way for p to change the contents of /proc/3028/environ to not mention k=v while p is still running? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them … Read more