Commands using ping (69)

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View a file with less, starting at the end of the file
The same as typing 'less filename' then 'G' or '>' or the END key. Comes in handy with shell scripts or aliases: alias weblog='less +G /var/log/httpd/access_log' alias errlog='less +G /var/log/httpd/error_log'

get all Amazon cloud (amazonws etc) ipv6 subnets

Repeat a command until stopped
In this case it runs the command 'curl localhost:3000/site/sha' waiting the amount of time in sleep, ie: 1 second between runs, appending each run to the console. This works well for any command where the output is less than your line width This is unlike watch, because watch always clears the display.

convert unixtime to human-readable
Mac have direct conversion of seconds (Epoch time)

for newbies, how to get one line info about all /bin programs
Get simple description on each file from /bin dir, in list form, usefull for newbies.

tcpdump whole packets to file in ascii and hex with ip adresses instead of hostname

Calculate N!

DVD ripping with ffmpeg
Alternative, imho better, using the concat protocol

Compute the average number of KB per file for each dir
Shorter version using --tag

show all programs connected or listening on a network port
Use the aliased command 'nsl'


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