Comments on: How to Generate Random Numbers in Linux

By: Ravi Saive

Ravi Saive — Sat, 28 Sep 2024 05:27:31 +0000

In reply to Charley Herring. @Charley You can link the command to a source file by using grep or awk to check if the generated number matches any in the file.

echo $RANDOM | cut -c 1-3 | grep -Ff sourcefile.txt

This will compare the generated number with entries in the file.

By: Charley Herring

Charley Herring — Sun, 22 Sep 2024 21:55:39 +0000

I’m going to be upfront and honest with you. I’m 77 years old and trying to make an extra dollar using the Oklahoma Pick-3 lottery. How would I link this command line (echo $RANDOM | cut -c 1-3) to a source file of previously picked 3-digit numbers? Or perhaps something else mentioned in the article.

By: Ravi Saive

Ravi Saive — Tue, 12 Jul 2022 04:38:56 +0000

Here are some more ways to generate random numbers in Linux. The below command will generate 3 digits random number.

$ echo $RANDOM | cut -c 1-3

The below command will generate 5 digits random number.

$ LL=$LANG;LANG=C;L=5;N=;while read -n 1 C; do [[ $C =~ [0-9] ]]&&N+=$C&&((${#N}==L))&&printf '%s' "${N}"&&break;done</dev/urandom;LANG=$LL