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Question
In linux, how do you print out the exit/error code of the last command that was executed?
Answer

echo $?

^^ note that $ denotes variable expansion, and ? is special variable to represent exit code of last command/program executed in foreground.


Question
In linux, how do you print out the exit/error code of the last command that was executed?
Answer
?

Question
In linux, how do you print out the exit/error code of the last command that was executed?
Answer

echo $?

^^ note that $ denotes variable expansion, and ? is special variable to represent exit code of last command/program executed in foreground.

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20. Advanced Shell Scripting
int: this is very useful for writing wrapper shell scripts that just add one argument.] $# Expands to the number of positional parameters in decimal (i.e. the number of command-line arguments). <span>$? Expands to the status of the most recently executed foreground pipeline. [I.e., the exit code of the last command.] $- Expands to the current option flags as specified upon invocation,

Summary

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

Details

No repetitions

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