CODEWITHSUNDEEP
batch-file
Arthur.B
Arthur.B

Reputation: 23

Delete the extra space from echo command with a pipe

i have a simple problem that i can't manage to solve...

i use this line of batch to print the result of a command in a file without the carriage return : 

echo | set /P=%tmp% > %~n1.txt

but it keeps adding an extra space at the end that i don't want...

i've read some other posts but it is my first batch program so i'm a little lost with there solutions :p

i've tried :

%^^^cmd | set /P=%tmp% > %~n1.txt

Any ideas ?

Thanks !

Upvotes: 2

Views: 472

Answers (1)

dbenham
dbenham

Reputation: 130819

You simply need some quotes.

echo | set /P "=%tmp%" > %~n1.txt

Although there is a more efficient way to do it without the pipe. Note that quotes still should be used.

set /p "=%tmp%" >"%~n1.txt" <nul

If you don't include the quotes, then you would need the following:

set /p =%tmp%>%~n1.txt <nul

But the unquoted form would fail if the value of %tmp% was a digit, or if it ends with space followed by a digit. It would fail because the digit would be treated as a file handle to be used by the redirection. For example, 1 equates to stdout.

The quotes are the simplest manner to cleanly avoid the file handle issue.

Upvotes: 2

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