Powershell添加内容外文件文本错误

Question

When i use this:

"$LogTime $CurrentDate Invalid Archive Grouping selected. You selected '$ArchiveGrouping'" | Out-File $LogFile -Append -Force 

To write to a file i generated with this code:

$Logdate = Get-Date
$Logname = $Logdate.ToString("yyyyMMdd") + ".txt"
Add-Content -Path C:\ArchiveStorage\$Logname "Log" -force
$LogFile = "C:\ArchiveStorage\$Logname"

The Text in the file looks weird it looks like this:

if i change the code to just write to an existing file like:

$LogFile = "C:\ArchiveStorage\Log.txt"

The text file is as it should be:

why does it make spaces and all that random crap ?

Answer 1

You've been hit by double byte Unicode. When, say, letter A is written into the file, there usually is a single byte value 0x41 . In double byte Unicode, the byte value for A is 0x0041 or 0x4100 depending on endianess.

When Notepad opens a file that has no Unicode byte order mark , it assumes all the extra 00 in file contents are blank spaces. That's why you do see weridspacing .

For a fix, try using -Encoding ASCII parameter with Add-Content .

Answer 2

The "Log" entries look different because they were written with Add-Content, which uses a default encoding of ASCII, and Out-File uses a default encoding of Unicode.

Either specify the encoding type on Out-File, or switch to using Add-Content for both the "Log" heading and the detail lines.