:: random password using bash

10 sec read

:: how to create random password using bash

$ < /dev/urandom tr -dc A-Za-z0-9_ | head -c8

:: make simple random password script

$ vi ranpass.sh
#!/bin/bash
p=$( < /dev/urandom tr -dc A-Za-z0-9_ | head -c8 )

echo "${p}"

$ chmod +x ranpass.sh
$ ./ranpass.sh
3GXuPBx6

:: link
+ google

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3 Replies to “:: random password using bash”

  1. I don’t understand.

    -d option in tr shouldn’t delete and exclude instead of select alphanumeric characters?

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