Started filling out info to bash

bash.md

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+# Bash
+
+### Bash Tips
+- http://redsymbol.net/articles/unofficial-bash-strict-mode/
+- http://redsymbol.net/articles/bash-exit-traps/
+- http://unix.stackexchange.com/questions/97101/how-to-catch-an-error-in-a-linux-bash-script
+- https://www.gnu.org/software/bash/manual/html_node/Command-Grouping.html
+- https://www.vidarholen.net/contents/blog/?p=178
+- http://www.linuxjournal.com/content/bash-sub-shells
+- https://stelfox.net/blog/2013/11/fail-fast-in-bash-scripts/
+- http://rockhopper.monmouth.edu/cs/jchung/cs370/cs_370_-_subshells_and_parallel_processing