Monday, October 9. 2006
Password generator in bash
#!/bin/bash
# Number of letters as argument, default 7
if [ “$1” != “” ]; then
num=$1
else
num=7
fi
generate() {
# Take 1 block from /dev/urandom, encode it base64,
# remove first two and last status line, purge capital letters and
# special characters from output, cut desired length from front
# sed with [A-Z] doesn’t work with Suse - typical!
password=$(dd if=/dev/urandom count=1 2>/dev/null | uuencode -m - \
| head -n 2 | tail -n 1 | sed -e ’s:[/+A-Z]::g’ | cut -c -$num)
}
# Repeat until letters AND digits occur
while true; do
generate
if echo $password | grep [a-z] | grep [0-9]; then break; fi
done
# Number of letters as argument, default 7
if [ “$1” != “” ]; then
num=$1
else
num=7
fi
generate() {
# Take 1 block from /dev/urandom, encode it base64,
# remove first two and last status line, purge capital letters and
# special characters from output, cut desired length from front
# sed with [A-Z] doesn’t work with Suse - typical!
password=$(dd if=/dev/urandom count=1 2>/dev/null | uuencode -m - \
| head -n 2 | tail -n 1 | sed -e ’s:[/+A-Z]::g’ | cut -c -$num)
}
# Repeat until letters AND digits occur
while true; do
generate
if echo $password | grep [a-z] | grep [0-9]; then break; fi
done
Calendar
Quicksearch
Categories
Show tagged entries
android antenna anti-spam apache astronomy austria automobile ballooning bash bluetooth bug career cloud collecting comic cooking crypto cw debian dreams education electronics event fail fashion finance flickr fuerteventura fun gentoo geography german gnu-linux gnucash google google earth graphics guitar hardware history image processing internet kernel kids language lanzarote lifestyle linkroll literature ltd machine learning making mallorca mathematics matlab microsoft migration munich music nautilus octave pdf perl philately philosophy phone photo gear photography physics podcast politics postfix private programming public transport rant religion review salzburg samsung science security social web software statistics storage sustainability symbian tablet time lapse transceiver tv usenet venice video virtualization wordplay work www yahoo
Follow me
Bookmarks
- Die nächste Krise zeichnet sich ab: Gasversorgung in Europa
Mon, Nov 18. 2024
- Ham Radio and the Aftermath of Helene
Wed, Oct 23. 2024
- 5. Platz für Österreich bei der HST in Tunesien 2024
Mon, Oct 21. 2024
- Alkohol laut Fachgesellschaft auch in Maßen nicht gesund - Gesundheit - derStandard.at › Gesundheit
Tue, Aug 20. 2024
- Gesetz gegen Lichtverschmutzung in Kraft - ooe.ORF.at
Wed, May 1. 2024
- Runaway consumerism explains the Fermi Paradox
Wed, Apr 24. 2024
- „Lichtinseln“: Erste Kommunikationsübung zum neuen Konzept der Stadt Wien und der Religionsgemeinschaften - Presse-Service
Sat, Apr 20. 2024