Commands by Valise

Commands by Valise (2)

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Copy public ssh Id to new host withtout bash redirection
This is sample output - yours may be different.
-1

cat .ssh/id_dsa.pub | ssh <HOST> "mkdir -p .ssh && tee -a .ssh/authorized_keys"

Valise · 2012-10-11 12:12:45 8
Join the content of a bash array with commas

printf reapeats the format as longer as it has arguments. Then the idea is to make cut retain as much fields as we have elements in the array. As usual with such join/split string manipulation, you have to make sure you don't have conflicts between your separator and your array content.
This is sample output - yours may be different.
0

printf "%s," "${LIST[@]}" | cut -d "," -f 1-${#LIST[@]}

Valise · 2012-06-04 14:56:12 4

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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

check open ports without netstat or lsof

monitor network traffic and throughput in real time

see http://iptraf.seul.org/ for all kinds of documentation and screenshots

Git diff last two commits

How about this one ?

convert filenames in current directory to lowercase

The simplest way I know.

Use the arguments used in the last command

Very basic, but who knows.. mkdir !$ should work too, only uses 'the last' argument. !-2 executes cd Desktop/Notes again. More tips in 'man history'

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

duration of the DNS-query

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