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Configure sendmail to accept emails only if “from", “to" or specific field matches
you can exclude an email address or even a host that is spamming you using the access file located in your etc directory, the bad news is that it does not support regex or even wildcards.
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Remotley start programs on your Linux Desktop
It is very easy to start programs remotely on your windows desktop from another computer but running X11 application on Linux from another ssh session would start a new X11 session on your remote machine, that was a problem for me and here is how I solved that…..
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Sort Unix processes on ps by highest memory usage
just a snippet, –sort is not good for me..try
ps -eo pmem,pcpu,rss,vsize,args | sort -k 1 -r | more
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