$? 썸네일형 리스트형 [linux] What is '$?' in bash shell Unlike functions in “real” programming languages, Bash functions don’t allow you to return a value when called. When a bash function completes, its return value is the status of the last statement executed in the function, 0 for success and non-zero decimal number in the 1 - 255 range for failure. The return status can be specified by using the return keyword, and it is assigned to the variable .. 더보기 이전 1 다음