Call another script in the script (this actually creates a sub-process) www.2cto. comfather. sh #! /Bin/bashecho & quot; thisisthefather & quot; FILM & quot; AFewGoodMen & quot; echo & quot; Ilikethefilm: $ FILM & quot; # callthechil
Call another script in the script (this actually creates a sub-process) www.2cto.com father. sh #! /Bin/bash echo "this is the father" FILM = "A Few Good Men" echo "I like the film: $ FILM" # call the child script # export FILM. /child. sh echo "back to father" echo "and the film is: $ FILM" exit child. sh www.2cto.com #! /Bin/bash echo "called from father... I am the child "echo" filem name is: $ FILM "FILM =" Die Hard "echo" changing film to: $ FILM "exit result: Resolution: this is because father does not export the variable FILM to child. Www.2cto.com when father exports the FILM variable to child, the child script will know the value of the FILM variable,
The result is as follows: father used the export command to export the variable FILM, so any script can use the variable FILM,
They will inherit the ownership of FILM. Note that the sub-process variables cannot be exported to the parent process. to achieve this, you can use redirection.
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