Split one file into multiple files based on delimiter

Question

I have one file with -| as delimiter after each section...need to create separate files for each section using unix.

example of input file

wertretr ewretrtret 1212132323 000232 -| ereteertetet 232434234 erewesdfsfsfs 0234342343 -| jdhg3875jdfsgfd sjdhfdbfjds 347674657435 -| 

Expected result in File 1

wertretr ewretrtret 1212132323 000232 -| 

Expected result in File 2

ereteertetet 232434234 erewesdfsfsfs 0234342343 -| 

Expected result in File 3

jdhg3875jdfsgfd sjdhfdbfjds 347674657435 -| 

Answer 1

A one liner, no programming. (except the regexp etc.)

csplit --digits=2  --quiet --prefix=outfile infile "/-|/+1" "{*}" 

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tested on: csplit (GNU coreutils) 8.30

Notes about usage on Apple Mac

"For OS X users, note that the version of csplit that comes with the OS doesn't work. You'll want the version in coreutils (installable via Homebrew), which is called gcsplit." — @Danial

"Just to add, you can get the version for OS X to work (at least with High Sierra). You just need to tweak the args a bit csplit -k -f=outfile infile "/-\|/+1" "{3}". Features that don't seem to work are the "{*}", I had to be specific on the number of separators, and needed to add -k to avoid it deleting all outfiles if it can't find a final separator. Also if you want --digits, you need to use -n instead." — @Pebbl

Answer 2

awk '{f="file" NR; print $0 " -|"> f}' RS='-\\|'  input-file 

Explanation (edited):

RS is the record separator, and this solution uses a gnu awk extension which allows it to be more than one character. NR is the record number.

The print statement prints a record followed by " -|" into a file that contains the record number in its name.