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Useful when you've produced a large file of numbers, and want to quickly see the distribution. The value of y halfway along the x axis is the median. Simple!
Just create the listOfNumbers.txt file with a number on each line to try it out.
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
explanation:
grep -- displays process ids
-v -- negates the matching, displays all but what is specified in the other options
-u -- specifies the user to display, or in this case negate
The process loops through all PIDs that are found by pgrep, then orders a forced kill to the processes in numerical order, effectively killing the parent processes first including the shells in use which will force the users to logout.
Tested on Slackware Linux 12.2 and Slackware-current
date -ud @1320198157
[re]verify those burned CD's early and often - better safe than sorry -
at a bare minimum you need the good old `dd` and `md5sum` commands,
but why not throw in a super "user-friendly" progress gauge with the `pv` command -
adjust the ``-s'' "size" argument to your needs - 700 MB in this case,
and capture that checksum in a "test.md5" file with `tee` - just in-case for near-future reference.
*uber-bonus* ability - positively identify those unlabeled mystery discs -
for extra credit, what disc was used for this sample output?
Use ^D instead of exit.
Also ^D ends input stream when you use terminal for typing into standard input.
This allows for sleeping in between pings. Also, espeak needs to be installed.