About the shell programming?" 1 "the specific mean? As shown, how he is same file? Bosses, please answer, thank you

CodePudding user response:

The shell? On behalf of any single character

CodePudding user response:

reference 1st floor zhouchao6 response:

shell? On behalf of any single character

Feeling is not matching, and for the first time you see in the picture a for loop, will update in the array, the second for loop, iterate through group updates, behind "? 1 "compared with the old package, and then copy, remove and replace,
But I still don't understand?" 1 "specific what meaning be?

CodePudding user response:

? Is a single character,? Match one character to add 1, such as the a1