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Findstr to read user-defined line from a "for" loop
Posted: 15 Jan 2012 01:29
by Rileyh
SCENARIO:
(in test.txt)
Code: Select all
(empty line)
printline Hello World
(empty line)
(in my current batch file)
Code: Select all
@echo off
setlocal enabledelayedexpansion
:loop
set "$file=test.txt"
for /f "tokens=1-2*" %%a in ('findstr /b /i "printline" "!$file!"') do (
set command=%%a
set value=%%b
echo %%b
goto :break
)
:break
(file continues)
THE ISSUE:
After extensive trial and error I have concluded that findstr does not read only the first line, it "picks out" the string from the file test.txt rather than reading line by line.
I need it to read the file on a line that I set (as a variable).
Thanks in advance.
Regards,
Rileyh
Re: Findstr to read user-defined line from a "for" loop
Posted: 15 Jan 2012 07:40
by dbenham
I already answered your identical question at
Specify which line to read in "Findstr"dbenham wrote:Code: Select all
@echo off
set "$file=test.txt"
set "x=50"
set "command="
set "value="
for /f "tokens=1,2* delims=: " %%a in ('findstr /n /i /b "printline " ^| findstr /b "%x%:"') do (
set "command=%%b"
set "value=%%c"
setlocal enabledelayedexpansion
echo !value!
endlocal
)
(file continues)
2 tweaks - no need to keep 1st token, and removed <space> after "printline".
Code: Select all
@echo off
set "$file=test.txt"
set "x=50"
set "command="
set "value="
for /f "tokens=2* delims=: " %%a in ('findstr /n /i /b "printline" ^| findstr /b "%x%:"') do (
set "command=%%a"
set "value=%%b"
setlocal enabledelayedexpansion
echo !value!
endlocal
)
(file continues)
Rileyh wrote:After extensive trial and error I have concluded that findstr does not read only the first line, it "picks out" the string from the file test.txt rather than reading line by line.
I need it to read the file on a line that I set (as a variable).
FINDSTR reads every line of test.txt and prints only the lines that match the specified search. That behavior cannot be changed.
Dave Benham
Re: Findstr to read user-defined line from a "for" loop
Posted: 15 Jan 2012 23:32
by Rileyh
I sincerely apologize to both Squashman and dbenham for my poor conduct on this forum. I did not test your code enough dbenham which I have now found out works exactly as I needed it to. I honestly am sorry to you both and I hope that we can get past this.
Apologies,
Rileyh