powershell scripting tutorial

PowerShell's handling of strings has a very powerful function, stronger than any scripting language. Let's take a look at the replacement string operation today. If I want to replace "a" in the string "ABCD" with "X", the code is as follows: Command: Copy Code code as follows: PS > "ABCD"-replace "a", "X" Output: Copy Code code as follows: Xbcd If I want to replace the "BC" in the string "ABCD" with null, the co

# input Check:If [-Z ']; ThenError "Error:you must specify a file, use-h for help"FiFilen= "$"# Rename any. 1,. 2 etc File:For N in 9 8 7 6 5 4 3 2 1; DoIf [-F ' $filen. $n "]; Thenp= ' expr $n + 1 'echo "MV $filen. $n $filen. $p"MV $filen. $n $filen. $pFiDone# Rename the original file:If [-F "$filen"]; Thenecho "MV $filen $filen. 1"MV $filen $filen. 1Fiecho Touch $filenTouch $filenHow does this script work? After detecting a file name provided by the user, we perform a 9 to 1 loop. File 9 is na