Quotes Within Quotes In Linux

I keep forgetting this every time even though I have stumbled across this so many times.

I'm now gonna stick this here so that I can refer it back and hopefully remember this for good.

http://stackoverflow.com/questions/1250079/how-to-escape-single-quotes-within-single-quoted-strings

Basically, the idea is to ....

always just replace each embedded single quote with the sequence: '\'' (that is: quote backslash quote quote) or '"'"' , which closes the string, appends an escaped single quote and reopens the string. 

 https://stackoverflow.com/a/1315213/335181


Putting the above into a perl script works wonder:

#!/usr/bin/perl -pl
s/'/'\\''/g;    ### or s/'/'"'"'/g;
$_ = qq['$_'];