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Try to perform a fully TCP 3 way handshake on for a given host-port with a timeout of 1s.
creates associative array from apache logs, assumes "combined" log format or similar. replace awk column to suit needs. bandwidth per ip is also useful. have fun. I haven't found a more efficient way to do this as yet. sorry, FIXED TYPO: log file should obviously go after awk, which then pipes into sort.
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
(relies on 'imagemagick')
Convert all .png files to .gif. This can also go the other way if you reverse the file extensions in the command, e.g.:
$ for file in *.gif; do convert "$file" "$(basename $file .gif).png"; done
If the file is named 'example1.png' it will be named 'example1.gif' when it is complete.
NOTE: When opening the files you might need to strip the very top line with notepad++ as its a mistake header
This is useful when the local machine where you need to do the packet capture with tcpdump doesn?t have enough room to save the file, where as your remote host does
tcpdump -i eth0 -w - | ssh forge.remotehost.com -c arcfour,blowfish-cbc -C -p 50005 "cat - | gzip > /tmp/eth0.pcap.gz"
Your @ PC1 doing a tcpdump of PC1s eth0 interface and its going to save the output @ PC2 who is called save.location.com to a file /tmp/eth0-to-me.pcap.gz again on PC2
More info @: http://www.kossboss.com/linuxtcpdump1
making it "sound" more "natural" language like -- additionally sorting the longest words alphabetically:
this approach is using:
* to get at all lines of input
* post-"for" structure
* short-circuit-or in sort: if the lengths are the same, then sort alphabetically otherwise don't even evaluate the right hand side of the or
* -C sets all input and ouput channels to utf8
Print out your age in days in binary.
Today's my binary birthday, I'm 2^14 days old :-)
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This command does bash arithmatic $(( )) on two dates:
Today: $(date +%s)
Date of birth: $(date +%s -d YYYY-MM-DD)
The dates are expressed as the number of seconds since the Unix epoch (Jan 1970),
so we devide the difference by 86400 (seconds per day).
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Finally we pipe "obase=2; DAYS-OLD" into bc to convert to binary.
(obase == output base)
lists files and folders in a folder with summary.
Use Ruby's standard Curses module to display a Lissajous curve in the console. Replace the "0.2" with different numbers for different curves.
