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(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.
displays time in seconds since January 1, 1970 UTC
prerequisite:
$ mkdir ~/journal
Create an image of "device" and send it to another machine through the network ("target" and "port" sets the ip and port the stream will be sent to), outputting a progress bar
On the machine that will receive, compress and store the file, use:
$nc -l -p | 7z a -si -m0=lzma2 -mx=9 -ms=on
Optionally, add the -v4g switch at the end of the line in order to split the file every 4 gigabytes (or set another size: accepted suffixes are k, m and g).
The file will be compressed using 7z format, lzma2 algorithm, with maximum compression level and solid file activated.
The compression stage will be executed on the machine which will store the image. It was planned this way because the processor on that machine was faster, and being on a gigabit network, transfering the uncompressed image wasn't much of a problem.
Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name.
i.e.: logfile.1.gz > logfile.2.gz
I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.
its useful to run dos2unix command later on them.
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
Uses the file located in /etc/services
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