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<code> perl -pi -e "s/p+\s+\d+(-\d*)*\.|p+\d+(-\d*)*\.//g" reading.txt </code>

*local current directory to home/pictures directory:

<code>rsync -avz --stats --progress Pictures roberttwomey.com:~/pictures/</code>

*grab documents from online backup:

<code>rsync -n -h -e ssh -avz --stats --progress b393466@hanjin.dreamhost.com:~/Documents/dxarts473_s11/ Documents/</code>

with optional delete

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* find this filename in a recursive search and show previous 30 lines of result:

<code>ls -laR . | grep -b30 "scale_signal.o" </code>

* do this to connect to 192.168.0.39 for instance:

<code>ssh -f -L 3306:localhost:3306 rtwomey@192.168.0.39 sleep 10</code>

ssh -fNg -L 3306:localhost:3306 rtwomey@192.168.1.191

</code>

*grab a website recursively

<code> wget -r --level=1 http://www.ppc.sas.upenn.edu/ppquestionnaires.htm </code>