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Question
In linux, if you have declared variable: x=2, how do you get rid of variable x, as if it never existed (i.e. never been declared)?
Answer

unset x

^^ note that unset is a shell built-in command


Question
In linux, if you have declared variable: x=2, how do you get rid of variable x, as if it never existed (i.e. never been declared)?
Answer
?

Question
In linux, if you have declared variable: x=2, how do you get rid of variable x, as if it never existed (i.e. never been declared)?
Answer

unset x

^^ note that unset is a shell built-in command

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20. Advanced Shell Scripting
nd is an alias, a built-in or a system executable. ulimit Prints and sets various user resource limits like memory usage limits and CPU limits. See bash (1) for details. umask See Section 14.2. <span>unset VAR Deletes a variable or environment variable. unset -f func Deletes a function. wait Pauses until all background jobs have completed. wait PID Pauses until background process with pro

Summary

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

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