-2

I have a large text file.

I need to quickly pull a bunch of lines, say from #14600 to #14700, from this file, as a separate file.

How it could be done?

3

Using sed

sed -n 14600,14700p filename > newfile

Where:

  • p : Print out the pattern space (to the standard output). This command is usually only used in conjunction with the -n command-line option.

  • n : If auto-print is not disabled, print the pattern space, then, regardless, replace the pattern space with the next line of input. If there is no more input then sed exits without processing any more commands.

2

You can use sed to get those results:

sed -n '14600,14700p;14700q' largefile
  • For me this command worked a bit slower than the one without ;LINEq (when extracting single line 26995107 from a 27169334-line file). Why did you include this q part? – Ruslan Apr 16 at 11:29
0

using awk

awk 'NR>=14600&&NR<=147000' filename
0

Old-style:

tail -n +14600 filename | head -n 100

and less-memory-save variant:

head -n 14700 filename | tail -n +14600

Not the answer you're looking for? Browse other questions tagged or ask your own question.