Question

In the windows shell:

echo 'foo bar' | find 'foo'

succeeds (i.e. errorlevel = 0). However, I want a script that fails (i.e. errorlevel <> 0) when it finds a particular word in some input text. Any ideas?

Answer 1

A lttle trickery can emulate what you desire. Only the first three lines are required, the rest are just a test.

c:> echo 'foo bar' | find 'foo' c:> if x%errorlevel%==x0 echo 1 | find '2' c:> if not x%errorlevel%==x0 echo 1 | find '1' >nul 2>nul c:> echo %errorlevel% 1