1

Thanks for looking into my question.

I have a batch command running in jenkins windows batch command prompt. Let's a take a simple command

echo hello world

I want to write this command output to a file as well as this output to be displayed on command prompt. I have tried below 2 ways.

echo helloworld |tee -a .\test.log
echo hello world >>.\test.log >>CON

both of the above are not working.

Could anyone help me with this.

Thanks, R Dama.

Ras
  • 543
  • 1
  • 9
  • 25
  • 1
    [here's](http://www.dostips.com/forum/viewtopic.php?f=3&t=5386) native windows script (not binary) that emulates tee command. – npocmaka Jul 13 '17 at 08:07
  • 2
    Possible duplicate of [Displaying Windows command prompt output and redirecting it to a file](https://stackoverflow.com/questions/796476/displaying-windows-command-prompt-output-and-redirecting-it-to-a-file) – aschipfl Jul 13 '17 at 10:15
  • Also related: [Using a custom Tee command for .bat file](https://stackoverflow.com/q/10711839) and [Is it possible to write a Tee in Windows batch or in Java?](https://stackoverflow.com/q/14278504) – aschipfl Jul 13 '17 at 10:16

4 Answers4

2

There is no tee command in pure batch scripting.

The easiest work-around is to redirect to a file and then to type the file, like this (do not put a SPACE behind the echo command as it was output also):

echo Hello world!> "logfile.txt"
type "logfile.txt"

Of course, the output is only printed to the console as soon as the command (echo in the example) has been finished executing.

If you want to append to an already existing log file logfile.txt, use this instead:

echo Hello world!> "logfile.tmp"
type "logfile.tmp"
type "logfile.tmp" >> "logfile.txt"
del "logfile.tmp"

Alternatively, in case logfile.txt does for sure exist, you may use this:

echo Hello world!> "logfile.tmp"
type "logfile.tmp"
copy /Y "logfile.txt" + "logfile.tmp" "logfile.txt" /B > nul
del "logfile.tmp"
aschipfl
  • 33,626
  • 12
  • 54
  • 99
1

There is a way to do this with PowerShell:

powershell "echo HelloWorld | tee test.txt"

Another way, without PowerShell, could be to type the file that received the output:

echo HelloWorld > test.txt | type test.txt

I do prefer the first solution...

Renato Lellis
  • 11
  • 1
  • 1
    Thanks for the response. I could not use "type test.log". Because, i have appended 500+lines to this test.log. I don't want to print all these lines. – Ras Jul 13 '17 at 00:34
1

Windows does not really have a tee command short of the PowerShell Tee-Object (alias tee). Here is a cmd script subroutine that will produce a tee effect. The DoMsg subroutine will append everything to the log file and then write it to stdout.

@ECHO OFF
CALL:DoMsg ECHO hello, world
CALL:DoCmd DIR
EXIT /B 0

:DoMsg
ECHO %* >"%TEMP%\domsg.tmp"
TYPE "%TEMP%\domsg.tmp" >>test.log
TYPE "%TEMP%\domsg.tmp"
GOTO:EOF

:DoCmd
CALL:DoMsg CMD: %*
%*
GOTO:EOF
lit
  • 14,456
  • 10
  • 65
  • 119
  • Thanks for prompt response. I believe this should work. Will try and let you know. – Ras Jul 13 '17 at 00:36
1

If you don't need it to do both in real time, you could use 2 separate commands:

echo hello world > test.log
type test.log

Which could also be done in a single line:

echo hello world > test.log & type test.log
isrnick
  • 621
  • 5
  • 12
  • Thanks for the response isrnick. I could not use "type test.log". Because, i have appended 500+lines to this test.log. I don't want to print all these lines. – Ras Jul 13 '17 at 00:32