Environment Question:
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While executing a command, the shell:
a) Executes it in the same process (as shell)
b) Creates a child shell to execute it
c) Loads a special program to take care of the execution
d) None of the above

Answer:

b) Creates a child shell to execute it

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Which of the following commands allows definition and assignment of environment variables under bash?
a) env
b) export
c) environ
d) setenviron		Which variable contains current shell process id:
a) $*
b) $?
c) $$
d) $!