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add random color and external ip address to prompt (PS1)

Terminal - add random color and external ip address to prompt (PS1)
IP=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F# '{print $1}' | tail -n 1 ); R=3$((RANDOM%6 + 1)); PS1="\n\[\033[1;37m\]\u@\[\033[1;$R""m\]\h^$IP:\[\033[1;37m\]\w\$\[\033[0m\] "
2010-10-20 07:29:14
User: rubo77
Functions: awk grep nslookup tail
0
add random color and external ip address to prompt (PS1)

this adds a random color to your prompt and the external ip.

useful if you are using multiple mashines with the same hostname.

Alternatives

There are 14 alternatives - vote for the best!

Terminal - Alternatives

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What others think

if you want a shorter version, you could add only the last part of the ip with this:

IP=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F. '{print $3 "." $4}' | awk -F# '{print $1}' | tail -n 1 ); R=3$((RANDOM%6 + 1)); PS1="\n\[\033[1;37m\]\u@\[\033[1;$R""m\]\h^$IP:\[\033[1;37m\]\w\$\[\033[0m\] "

instead.

or even without the ip (still useful if you get mixed up with all your open terminals):

R=3$((RANDOM%6 + 1)); PS1="\n\[\033[1;37m\]\u@\[\033[1;$R""m\]\h:\[\033[1;37m\]\w\$\[\033[0m\] "

Comment by rubo77 201 weeks and 5 days ago

if you want a color depending on the mac adress, use this command:

UNIQUE_BY_MAC=$(ifconfig |grep eth0|awk '{ print strtonum("0x"substr($6,16,2)) }'); IP=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F# '{print $1}' | tail -n 1 ); RANDCOLOR=3$(($UNIQUE_BY_MAC%6 + 1));PS1="\n\[\033[1;37m\]\u@\[\033[1;$RANDCOLOR""m\]\h^$IP:\[\033[1;37m\]\w\$\[\033[0m\] ";

taken from

http://www.commandlinefu.com/commands/view/5737/unique-number-by-mac-address

Comment by rubo77 201 weeks and 4 days ago

the external ip is taken from

nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F# '{print $1}' | tail -n 1

this is not always what you need,

if you want the internat ip address, use this instead:

ifconfig | grep -i Bcast | awk -F" " '{print $2}' | awk -F: '{print $2}' | tail -n 1

so the overall command will be

UNIQUE_BY_MAC=$(ifconfig |grep eth0|awk '{ print strtonum("0x"substr($6,16,2)) }'); IP=$(ifconfig | grep -i Bcast | awk -F" " '{print $2}' | awk -F: '{print $2}' | tail -n 1); RANDCOLOR=3$(($UNIQUE_BY_MAC%6 + 1)); PS1="\n\[\033[1;37m\]\u@\[\033[1;$RANDCOLOR""m\]\h^$IP:\[\033[1;37m\]\w\$\[\033[0m\] ";
Comment by rubo77 201 weeks and 4 days ago

instead of

nslookup `hostname` | grep -i address | awk -F" " '{print $2}'

you could try

hostname -I

Shouldnt have to do a lookup to find yourself. That would only be helpful if you are suspecting dns issues.

Comment by bejiita78 4 days ago

Your point of view

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