I'd love if there was a single command line tool for packet sniffing a single command in Linux. something like
sniff dumpfile command so that you could just run the command you want to packet sniff in the terminal and get a dump of the packets somewhere else.
I'd like to dump / save / see only the network traffic of the single command that I enter, not all the TCP traffic on my single network interface. So if I was logged into my computer and had IRC running in the background, and I did
sniff somefile wget http://www.google.com, I'd want to see all the network traffic that the wget command did to download http://www.google.com. I don't want 'somefile' to have the IRC network traffic confusing things.
There are lots of linux/unix commands that accept a different command and do something different. From
sudo (run as superuser),
nice change nice level,
trickle (limit the bandwidth of a command)