Simple user agent switcher code for uzbl

sample_config.txt

# Open dmenu to select a user agent
bind ZU = spawn $XDG_DATA_HOME/uzbl/scripts/switch_useragent.sh
# Immediately switch to the user agent, bypassing dmenu.
bind ZI = spawn $XDG_DATA_HOME/uzbl/scripts/switch_useragent.sh "iPhone"
bind ZA = spawn $XDG_DATA_HOME/uzbl/scripts/switch_useragent.sh "Android (G1) Browser"

switch_useragent.sh

#!/bin/sh

[ -d "${XDG_DATA_HOME:-$HOME/.local/share}/uzbl" ] || exit 1
file=${XDG_DATA_HOME:-$HOME/.local/share}/uzbl/user_agents.txt

COLORS=" -nb #303030 -nf khaki -sb #CCFFAA -sf #303030"
if dmenu --help 2>&1 | grep -q '\[-rs\] \[-ni\] \[-nl\] \[-xs\]'
then
	DMENU="dmenu -i -xs -rs -l 10" # vertical patch
else
	DMENU="dmenu -i" # horizontal, oh well!
fi

if [ -z "$8" ] ; then
	new_agent=`grep -v '^[[:space:]#]' $file | $DMENU $COLORS | perl -p -e 's/^.*?: ?//'`
else
	new_agent=`grep "^$8:" $file | perl -p -e 's/^.*?: ?//'`
	[ -z "$new_agent" ] && exit 1
fi
echo "set useragent = $new_agent" > $4
echo "reload" > $4 # Reload the page so the new user agent is used.

user_agents.txt

# Original user agent. All lines beginning with a '#' are ignored, as are blank lines.
Uzbl: Uzbl (Webkit @WEBKIT_MAJOR.@WEBKIT_MINOR.@WEBKIT_MICRO) (@(uname -s)@ @(uname -n)@ @(uname -r)@ @(uname -v)@ @(uname -m)@ [@ARCH_UZBL]) (Commit @COMMIT)

# ----------------------
# --  Major Browsers  --
# ----------------------
Chrome: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/1.0.154.53 Safari/525.19
Firefox (Windows): Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)
Internet Explorer 7: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)
Opera: Opera/10.00 (X11; Linux i686 ; U; en) Presto/2.2.0
Safari: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/525.28.3 (KHTML, like Gecko) Version/3.2.3 Safari/525.28.3
Konqueror: Mozilla/5.0 (compatible; Konqueror/4.0; Linux) KHTML/4.0.5 (like Gecko)

# ----------------------
# --      Mobile      --
# ----------------------
iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20
Android (G1) Browser: Mozilla/5.0 (Linux; U; Android 1.1; en-gb; dream) AppleWebKit/525.10+ (KHTML, like Gecko) Version/3.0.4 Mobile Safari/523.12.2

# ----------------------
# --   Other / Misc   --
# ----------------------
cURL: curl/7.7.2 (powerpc-apple-darwin6.0) libcurl 7.7.2 (OpenSSL 0.9.6b)
Google Bot: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

# All these user agents were collected from http://www.zytrax.com/tech/web/browser_ids.htm