Output newline in text file through batch

Question

I am using a batch file to get bios information in a text file. syntax I am using:

wmic bios >> information.txt 

the output to the above syntax is properly. Next, I want to write a text at the end of the same file.

for this I am using

echo. >>information>>txt
echo. >>information.txt    
echo This is the report generated. >> information.txt

but the output in the end of text file is 桤摶桶摶摣ഠ洊扤桪摶癨癤癨捤⁤ഠ洊扤桪摶癨癤癨捤⁤਍摭橢癨桤摶桶摶摣ഠ洊扤桪摶癨癤癨捤⁤਍ plz help

Answer 1

WMIC outputs its information in unicode. Try like this to convert it to ASCII:

for /f "delims=" %%a  in ('wmic bios') do ( 
    for /f "delims="  %%z in ("%%a") do (echo %%z)>>info.txt
)

Answer 2

As npocmaka already stated, wmicgives you Unicode.

Here is another way to get 'wmic` output in ASCII:

wmic bios|findstr "^">information.txt
echo additional line>>information.txt

Answer 3

The default output from WMIC is a unicode without BOM stream, 2 bytes per character. But the default output from echo command depends on cmd start options. By default the output from cmd is 1 byte per character.

When you look at your generated file contents, the systems detects it is unicode and adapt the read/write routines to this, but when the echoed text is found, it is handled as unicode and each 2 characters are considered one unicode char.

If the resulting file needs to be unicode, then the echo commands need to be executed inside a cmd instance started with the /u switch to force output from echo to be unicode. You can run all the batch inside this cmd instance or make calls when needed

wmic bios > information.txt
cmd /q /u /c "echo additional line >> information.txt"

Also, if the final file needs to include the BOM, you can include it indicating to wmic to directly generate the file instead of redirecting the output

wmic /output:information.txt bios

If the file does not need to be unicode, you can filter the output from wmic (find, findstr or more) to convert it to a single byte characters stream so later single byte character echo commands are correctly included in the stream

(
    wmic bios
    echo(
    echo(additional line
)|find /v "" > information.txt