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Show system files in Finder

Default Mac OS X system behavior is to hide system and hidden unix files (usually starting with a . symbol, e.g.: .bash_history will be out of sight). This makes spotting/opening one of this files with Finder extremely difficult. you may use your terminal, typing command like "ls -a" that will show all of the files in that particular directory, including hidden and system one's. But sometimes it may become annoying to use terminal while using the GUI. So. To change this default behavior in finder you need to enter those commands in the terminal window: defaults write com.apple.finder AppleShowAllFiles TRUE And after this you need to restart all your Finder processes like so: killall Finder Comments?

Raspberry Pi boot applications Autorun

I had a problem with running required programs upon system startup. I had to set up hdparm utility each time system boots up. I have 2 external HDD's connected and require setting their sleep time for 10 minutes each boot. So setting this up. The answer is found at Debian administration guides.  I'll provide it in the end of the article. Here is my decision based on that: So to set up a program to run on system boot. (In fact one of the system run-levels). You can add it's name. But a good practice will be to add an  sh script with execution of this utility an all the parameters. Sample script is: #! /bin/sh # /etc/init.d/blah # # Some things that run always touch /var/lock/blah # Carry out specific functions when asked to by the system case " $1 " in start ) echo "Starting script blah " echo "Could do more here" ;; stop ) echo "Stopping script blah" echo "Could do more here...