add generate function and contrib/random script

I sometimes forget to copy-paste the passwords and usernames I
generate, so this should help with that. Uses the random string
generator script I made before by default.

1 files changed, 22 insertions, 0 deletions

diff --git a/contrib/random b/contrib/random
new file mode 100755
index 0000000..10ddda7
--- /dev/null
+++ b/contrib/random
@@ -0,0 +1,22 @@
+#!/bin/sh
+# Simple random string generator for passwords and usernames
+# $LEN initial declaration commented out for runtime LEN config
+
+LC_ALL=C
+#LEN=${LEN:-24}
+ALPHA="A-Za-z"
+NUM="0-9"
+SPECIAL='!"#$%&'\''()*+,-./:;<=>?@[\]^_`{|}~'
+
+random() {
+        </dev/urandom tr -dc "${ALPHA}${NUM}${SPECIAL}" | /bin/dd bs=1 count=${LEN:-32} 2>/dev/null ; echo
+}
+
+case $1 in
+        pass)
+                random ;;
+        user)
+                LEN=${LEN:-12} SPECIAL='' random ;;
+        *)
+                printf "Usage: $0 pass|user\nSet LEN environment variable for length" ;;
+esac