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There are several ways to run a shell script in Linux: directly execute it (./scriptname, assuming it is executable), invoke the script with sh command or with source (dot) command. What’s the difference?

Let’s try the following example:

Open a shell and type

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Angstrom distribution uses bitbake to build the entire distribution. There are 2 parameters for speeding up bitbake:

PARALLEL_MAKE: this is passed to make so setting it to “-j X” is handy (where value of X depends on number of CPU cores)

BB_NUMBER_THREADS: amount of bitBake threads used to run tasks such as do_fetch, do_configure, do_compile etc. Do not set too big value or machine will melt and you will loose control over it ;)

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1. Install required software and configure environment.
1.a: sudo apt-get install git help2man gawk texi2html texinfo build-essential unzip diffstat subversion texinfo cvs chrpath
1.b: Reconfigure dash: sudo dpkg-reconfigure dash, select no

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