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If everything validates, there's no output. Can be handy to run on a cron job set up to email output.
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token.
This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use:
`awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'`
You must adapt the command line to include:
* $MFA_IDis ARN of the virtual MFA or serial number of the physical one
* TTL for the credentials
This will save and execute your python script every time your press the F5 function key.
It can also be added to your .vimrc:
autocmd BufRead *.py nmap :w^M:!python %
NOTE: the ^M is not just caret-M, it can be created by type: ctrl-v ctrl-m
This way, you can specify how many hours in which you want your machine to shut down.
requires "youtube-dl" -- sure you can do this with wget and some more obscurity but why waste your time when this great tool is available?
the guts consist of mplayer converting a video to a gif -- study this command and read the man page for more information
$ mplayer video.flv -ss 00:23 -endpos 6 -vo gif89a:fps=5:output=output.gif -vf scale=400:300 -nosound
generates a 6 second gif starting at 23 seconds of play time at 5 fps and a scale of 400x300
start time (-ss)/end time (-endpos) formats: 00:00:00.000
end time should be relative to start time, not absolute. i.e. -endpos 5 == seconds after 0:42 = 0:47 end point
play with fps and scale for lower gif sizes
the subshell is a solution for the -b flag on youtube-dl which downloads the best quality video, sometimes, which can be various video formats $(ls ${url##*=}*| tail -n1)
The above command will send 4GB of data from one host to the next over the network, without consuming any unnecessary disk on either the client nor the host. This is a quick and dirty way to benchmark network speed without wasting any time or disk space.
Of course, change the byte size and count as necessary.
This command also doesn't rely on any extra 3rd party utilities, as dd, ssh, cat, /dev/zero and /dev/null are installed on all major Unix-like operating systems.
The command removes all the spaces whithin a file and leaves only one space.
Saves one character, the original is probably clearer
