I want to write a simple rock-paper-scissors game as a shell script for my Linux system. Can you step me through the process?
How do I program Rock, Paper, Scissors?
- Home
- / Linux Shell Script Programming
Linux Shell Script Programming
Shell script: How long someone’s been logged in?
My boss wants to have a simple tool that lets her quickly see how long someone’s been logged in to our Linux server. I figure a quick shell script, but I’m not sure how to code it. Note: Everyone has to log out at the end of the day, so it’s always going to be no more than 8 hours.
Can I analyze EXIF information on the Mac OS X command line?
I’m learning how to write shell scripts on my Mac OS X Mavericks system and would like to identify and extract specific information from the EXIF information in photos. Is that possible from the Bash shell command line?
Stealth image capture photo from webcam on my Mac?
Someone sneaks into my cubicle while I’m at lunch and takes candy out of my desk. Petty, but stupid too. I want to set up something so that my webcam on my iMac takes photos every few seconds while I’m away from my desk so I can catch the culprit! How can I do that in a stealthy manner while the computer is otherwise asleep?
Secretly capture screenshots on my Mac?
When I used to work on a Linux system, there was a utility we had that would let me take screen captures every 30 seconds while my computer was otherwise unattended, as a way to see if anyone else was using it or not. I liked it. Now I’d like to do the same on my Mac system. Possible?
Parsing “id” strings in a Shell Script?
Hello Dave. I need a Bash shell script that creates a directories with the group names automatically when user logs in to the system, in their home directory.
For example, user “sandy” might have the following set of groups from the ‘id’ command:
uid=10002(sandy) gid=119(rtkit) groups=119(rtkit),10001(admin),10003(pr007drdl)
and the directories “rtkit”, “admin” and “pr007drdl” should then be created. How do I do it?
Copy and Paste from the Mac OS X Command Line?
I am constantly running commands in Terminal.app on my MacBook and then copying and pasting the results into email messages or documents. Yes, I’m a tech writer. What I’m wondering is if there’s any way to actually copy and past into the Mac system wide copy/paste buffer directly from the command line?
Script to test line lengths for Twitter compatibility?
I’ve been tasked with writing a series of tweets for a Black Friday marketing campaign and am finding it a bit tricky because I don’t know how to easily check line length for a long series of lines. I’m on a Mac and can get around in Terminal. Is there some script you can share with me to check this, Dave?
