How to separate single text file into multiple text file by lines using batch

batchbatch filecmd.exetext editing

I have running the following program,

@echo off
cls
set /p "filename=type file name>"
setlocal enabledelayedexpansion
for /r E:\ %%a in (*) do if "%%~nxa"=="%filename%" (
echo %%~dpnxa >>path.txt
)

I have got a output file path.txt which contains,

E:\new.txt 
E:\Redmi\new folder\new.txt
E:\windows\new folder\new folder\new.txt

I like to have those in separate files like,

E:\new.txt in path1.txt

E:\Redmi\new folder\new.txt in path2.txt

E:\windows\new folder\new folder\new.txt in path3.txt

Best Answer

How can I separate single text file into multiple text file by lines?

Building on the comment by Seth, you can use the following batch file:

@echo off
cls
setlocal enabledelayedexpansion
set /p "filename=type file name>"
rem initialise counter to 1
set _count=1
for /r E:\ %%a in (*) do if "%%~nxa"=="%filename%" (
  echo %%~dpnxa >>path!_count!.txt
  rem increment the counter
  set /a _count+=1
  )
endlocal

Notes:

I have moved the setlocal line in order to stop the variable filename leaking into the calling cmd shell.

An A-Z Index of the Windows CMD command line
A categorized list of Windows CMD commands
enabledelayedexpansion - Delayed Expansion will cause variables to be expanded at execution time rather than at parse time.
endlocal - End localisation of environment changes in a batch file. Pass variables from one batch file to another.
for /r - Loop through files (Recurse subfolders).
set - Display, set, or remove CMD environment variables. Changes made with SET will remain only for the duration of the current CMD session.
setlocal - Set options to control the visibility of environment variables in a batch file.

Related Solutions

Linux – How to split a text file into multiple text files

And here's a nice, simple gawk one-liner :

$ gawk '{if(match($0, /^\[ (.+?) \]/, k)){name=k[1]}} {print >name".txt" }' entry.txt

This will work for any file size, irrespective of the number of lines in each entry, as long as each entry header looks like [ blahblah blah blah ]. Notice the space just after the opening [ and just before the closing ].

EXPLANATION:

awk and gawk read an input file line by line. As each line is read, its contents are saved in the $0 variable. Here, we are telling awk to match anything within square brackets, and save its match into the array k.

So, every time that regular expression is matched, that is, for every header in your file, k[1] will have the matched region of the line. Namely, "entry1", "entry2" or "entry3" or "entryN". name=k[1] just saves the value of k[1] (the match) into a new variable name.

Finally, we print each line into a file called <whatever value k currently has>.txt, ie entry1.txt, entry2.txt ... entryN.txt.

This method will be much faster than perl for larger files.

I can't vouch for this as I have never used windows shell, but I am willing to bet it will be far faster than that also. Gawk/awk are FAST.

How to separate single text file into multiple text file by lines using batch

Best Answer

How can I separate single text file into multiple text file by lines?

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