関連ワード:  powershell echo text file    powershell read text file    powershell read text file line by line    powershell write text file    powershell read text file into array    powershell read text file line by line into variable    powershell read text file into variable    powershell read text file line by line into array    powershell read text file to string    powershell read text file and search for string