How to output a random ASCII logo from a text file using a shell script?
ProgrammingThis forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
How to output a random ASCII logo from a text file using a shell script?
I have a plain text file that contains ASCII logos seperated by white space.
Im trying to figure out how to make a script that can output a random logo from that file.. Basically what im trying to do is shuffle blocks of text in a file and output only one such block. For simplicity all ASCII logos will not contain new lines (each logo will be a single block of text)
The following is what I tried, it radomizes the blocks, but outputs the whole file.. I assume the command (which I dont understand, ust found it) processes the whole file at once, and thus why I cant print out individual array items.
I actually just learned about the -s flag for cat. It removes consecutive blank lines, which you have separating your logos.
Shuf's -n flag also allows you to limit the number of "lines" printed after shuffling.
The tr at the end deletes the NULL byte.
I actually just learned about the -s flag for cat. It removes consecutive blank lines, which you have separating your logos.
Shuf's -n flag also allows you to limit the number of "lines" printed after shuffling.
The tr at the end deletes the NULL byte.
Thanks man I love you, you're a life saver.. I was afraid I was going to have to spend days trying to figure that out lol..
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.