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- T.me/efxtv
- #!/bin/bash
- # bash generate random alphanumeric string
- #
- # bash generate random 32 character alphanumeric string (upper and lowercase) and
- NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
- # bash generate random 32 character alphanumeric string (lowercase only)
- cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1
- # Random numbers in a range, more randomly distributed than $RANDOM which is not
- # very random in terms of distribution of numbers.
- # bash generate random number between 0 and 9
- cat /dev/urandom | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 1
- # bash generate random number between 0 and 99
- NUMBER=$(cat /dev/urandom | tr -dc '0-9' | fold -w 256 | head -n 1 | sed -e 's/^0*//' | head --bytes 2)
- if [ "$NUMBER" == "" ]; then
- NUMBER=0
- fi
- # bash generate random number between 0 and 999
- NUMBER=$(cat /dev/urandom | tr -dc '0-9' | fold -w 256 | head -n 1 | sed -e 's/^0*//' | head --bytes 3)
- if [ "$NUMBER" == "" ]; then
- NUMBER=0
- fi
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