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The iostat command is used for monitoring system input/output device loading by observing the time the devices are active in relation to their average transfer rates.
in ubuntu to get the iostat program do this:
sudo apt-get install sysstat
i found this command here:
http://www.ocztechnologyforum.com/forum/showthread.php?t=54379
This assumes you have the 'rpm', 'rpm2cpio' and 'cpio' packages installed. This will extract the contents of the RPM package to your current directory. This is useful for working with the files that the package provides without installing the package on your system. Might be useful to create a temporary directory to hold the packages before running the extraction:
$ mkdir /tmp/new-package/; cd /tmp/new-package
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"
If this command prints 'x' then your shell is vulnerable. Null output confirms that you are protected. Further reading: http://allanmcrae.com/2014/09/shellshock-and-arch-linux/
Installs pip packages defining a proxy
This will ring the system bell once if your script exits successfully and twice if it fails. So you can go look at something else and it will alert you when done. Don't forget to use 'xset b [vol [pitch [duration]]]' to get the bell to sound the way you want.
Print a git log (in reverse order) giving a reference relative to HEAD.
HEAD (the current revision) can also be referred to as HEAD~0
The previous revision is HEAD~1 then HEAD~2 etc.
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Add line numbers to the git output, starting at zero:
$ ... | nl -v0 | ...
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Insert the string 'HEAD~' before the number using sed:
$ ... | sed 's/^ \+/&HEAD~/'
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Thanks to bartonski for the idea :-)
Converting your PDF file to JPEG images. You can set resolution by -r option (default: 72dpi).
This will merge all of the changes from {rev_num} to head on the branch to the current working directory