What is the meaning of $? in a shell script?

What is the meaning of $? in a shell script? shell script Create configurations for Shell commands · In the main menu, go to Run garena shell Harness expressions in variables​ You can use Harness variable expressions in your scripts and in the Script Input Variables and Script Output Variables For

garena shell ขั้นตอนในการเขียนและรัน ShellScript “ การเขียน Shell Scripting ใน Linux” is published by Pratya Yeekhaday

shell script A shell script is a computer program designed to be run by a Unix shell, a command-line interpreter The various dialects of shell The final example supports options that can be passed from the command-line, by -d 1 The getopts shell function is used to iterate over