Using FIND and IF EXIST to delete a specific phrase from a text file

I am trying to trim a text file, although I have used the following command with no luck:

FIND "word1" C:\Users\Use开发者_开发技巧rname\Desktop\test.txt | IF EXIST "word1" (DEL "word1")

The syntax is incorrect, I have tried many different combination with no luck.

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If you are trying to remove specific text from a file, you can use sed (there are versions available for Windows such as this one). For example, to remove all instances of "word1":

sed -e "s/word1//g" inputfile > outputfile

Or if you want to only remove "word1" when it is not embedded in other text:

sed -e "s/\bword1\b//g" inputfile > outputfile

The second one uses \b to indicate word boundaries. Note that in a Windows command prompt, you need to enclose the sed script in double quotes.