In a dos batch I am searching one txt file line by line. How can I find line that starts with some string? So I need something like: if line starts with "string" do (...) in dos batch! Thx for help!

First you need something like a regex tool. Search for xgrep. ===================================== If at first you don't succeed, you're about average. M2

findstr /B /C:"string" File.txt > nul if not ErrorLevel 1 ( Your Commands ) This is NOT DOS but NT batch; see the above thread for some hints.

I need to find string inside other string(not inside file)! I am reading file with: for /f "eol= tokens=* delims= usebackq" %%a in (D:\test_promweb.log) do ( i need something like: findstr /B /C:"VMtriggers" "%%a" > nul .... Is it possible to find string inside other string or to compare 2 strings?

"In a dos batch I am searching one txt file line by line. How can I find line that starts with some string?" English is not my mother tongue as I am Italian, but I'm sure to have correctly understood your question. Anyway from your post #3 I suggest you try findstr /B /C:"C:\VMtriggers" "D:\test_promweb.log" > nul if not ErrorLevel 1 ( Your Commands ) as your For /F loop does nothing else than to read the file and makes cumbersome an easy operation. Take a look at the thread above this one as coding inside an IF may be tricky for not trained people.

I am reading from file test_promweb.log with: for /f "eol= tokens=* delims= usebackq" %%a in (D:\test_promweb.log) Lets say my test_promweb.log looks like: line 1 - C:\VMtriggers\Preb_script>pcli RenameLabel line 2 - C:\VMtriggers\Preb_script>goto end line 3 - C:\VMtriggers\Preb_script>del line 4 - fri 19.06.2009 line 5 - C:\VMtriggers\Preb_script>if line 6 - 0 File(s) copied As I said I am reading line by line. I am trying to find out if line 1, line 2, line 3.... line 100 are starting with string "C:\VMtriggers"! example - I have line "C:\VMtriggers\Preb_script>del", so I am trying to find out if I can find "C:\VMtriggers" in "C:\VMtriggers\Preb_script>del" I hope u will understand my problem now :)

you are the one not understanding what IVO posted. the findstr command uses an internal "for loop" (if you want to call it that way) to loop through files , so in fact, you don't need to use your own for loop (just for this case). as for searching within a string, that's what findstr does. It goes over the lines in the file and grab your string according to parameters you give it. GNU win32 packages | Gawk