How many lines

[devil0150]

Guys, im new here and i'm looking for a batch that shows me how many lines are there in some text document and set the output as variable.

If any of you can help me i'd be grateful.

[Dias de verano]

Code: [Select]

@echo off
setlocal enabledelayedexpansion
set /a lines=0
set filename=whatever.txt
for /f "delims==" %%L in ( ' type "%filename%" ' ) do (
    set /a lines+=1
    )
echo there are %lines% lines in the file %filename%


[Reno]

dias, how about blank lines?

[Dias de verano]

dias, how about blank lines?

For /f ignores blank lines. If it is desired to count them, then that script will not give the desired result. Got a suggestion?

[Reno]

no, i dont have other solution than the one posted. 

since the OP doesn't include blank line as requirement, the batch works perfect.

[BC_Programmer]

my method for counting lines, including blanks, would be to simply count the number of crlf pairs. Not sure how one would do that in batch.

[Dias de verano]

This was bugging me, and this is what I came up with:

Code: [Select]

@echo off
setlocal enabledelayedexpansion
set filename="whatever.txt"
echo This is the file:
echo -------------------
type %filename%
echo -------------------

echo (1) include blank lines
set /a lines=0 & for /f "delims==" %%F in ('findstr /R /N /C:".*" %filename%') do set /a lines+=1
echo count result=%lines% lines

echo (2) Don't include blank lines
set /a lines=0 & for /f "delims==" %%F in ('findstr /R /N /C:"." %filename%') do set /a lines+=1
echo count result=%lines% lines

Code: [Select]

This is the file:
-------------------
Monday
Tuesday
Wednesday
Thursday
Friday

Saturday
Sunday
-------------------
(1) Include blank lines
count result=8 lines
(2) Don't include blank lines
count result=7 lines


[Dias de verano]

my method for counting lines, including blanks, would be to simply count the number of crlf pairs. Not sure how one would do that in batch.

Or just LFs in Unix format text files (but we won't go there, since the OP said "batch".)

In essence, counting a CR/LF pair as a line is what findstr will do if the regex is ".*" (Of course it ignores the final cr/lf pair which DOS text files have)



Of course, a "blank" line could have tabs, spaces, etc. (these are still ignored if the regex is ".")

[Reno]

thanks for sharing the code. i haven't try regex before.

findstr /? reveal that regex can be powerful in string manipulation.
**going to google for regex tutorial. 

[devil0150]

Thanks everybody.
Very helpful.

[BC_Programmer]

So, another way of doing it via a counting method would be to count the number of cr's, add the number of LFs, and subtract the number of crlf pairs.

[Dias de verano]

So, another way of doing it via a counting method would be to count the number of cr's, add the number of LFs, and subtract the number of crlf pairs.

With DOS format files, that would be the equivalent of computing how many hands you had by counting the number of thumbs, adding the number of index fingers, and then subtracting the number of thumb/index pairs.

[BC_Programmer]

indeed, but it will cover mac, unix, and DOS format files, giving an accurate count in each case.

count all the cr's for mac, count the lfs for unix, and since crlf pairs will be counted in that, subtract the number of crlf pairs.

But yes it is a roundabout way of doing it...

[Dias de verano]

Ah now I see your cross-platform strategy.

[Dias de verano]

See here

http://en.wikipedia.org/wiki/Newline