05-23-2007
How to count lines - ignoring blank lines and commented lines
What is the command to count lines in a files, but ignore blank lines and commented lines?
I have a file with 4 sections in it, and I want each section to be counted, not including the blank lines and comments... and then totalled at the end.
Here is an example of what I would like my output to look like:
##comment##
line1
line2
line3
line4
line5
line6
6 lines
##comment##
line7
line8
line9
line10
line11
line12
line13
line14
line15
line16
line17
11 lines
##comment##
line18
line19
line20
line21
line22
5 lines
##comment##
line23
line24
line25
line26
line27
line28
line29
line30
line31
line32
line33
line34
line35
13 lines
35 total lines
Thank you in advance, for your help!
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LEARN ABOUT SUSE
flipdiff
FLIPDIFF(1) Man pages FLIPDIFF(1)
NAME
flipdiff - exchange the order of two incremental patches
SYNOPSIS
flipdiff [[-p n] | [--strip-match=n]] [[-U n] | [--unified=n]] [[-d PAT] | [--drop-context=PAT]] [[-q] | [--quiet]] [[-z] | [--decompress]]
[[-b] | [--ignore-space-change]] [[-B] | [--ignore-blank-lines]] [[-i] | [--ignore-case]] [[-w] | [--ignore-all-space]]
[--in-place] diff1 diff2
flipdiff {[--help] | [--version]}
DESCRIPTION
flipdiff exchanges the order of two patch files that apply one after the other. The patches must be "clean": the context lines must match
and there should be no mis-matched offsets.
The swapped patches are sent to standard output, with a marker line ("=== 8< === cut here === 8< ===") between them, unless the --in-place
option is passed. In that case, the output is written back to the original input files.
OPTIONS
-p n, --strip-match=n
When comparing filenames, ignore the first n pathname components from both patches. (This is similar to the -p option to GNU patch(1).)
-q, --quiet
Quieter output. Don't emit rationale lines at the beginning of each patch.
-U n, --unified=n
Attempt to display n lines of context (requires at least n lines of context in both input files). (This is similar to the -U option to
GNU diff(1).)
-d pattern, --drop-context=PATTERN
Don't display any context on files that match the shell wildcard pattern. This option can be given multiple times.
Note that the interpretation of the shell wildcard pattern does not count slash characters or periods as special (in other words, no
flags are given to fnmatch). This is so that "*/basename"-type patterns can be given without limiting the number of pathname
components.
-i, --ignore-case
Consider upper- and lower-case to be the same.
-w, --ignore-all-space
Ignore whitespace changes in patches.
-b, --ignore-space-change
Ignore changes in the amount of whitespace.
-B, --ignore-blank-lines
Ignore changes whose lines are all blank.
-z, --decompress
Decompress files with extensions .gz and .bz2.
--in-place
Write output to the original input files.
--help
Display a short usage message.
--version
Display the version number of flipdiff.
LIMITATIONS
This is only been very lightly tested, and may not even work. Using --in-place is not recommended at the moment.
There are some cases in which it is not possible to meaningfully flip patches without understanding the semantics of the content. This
program only uses complete lines that appear at some stage during the application of the two patches, and never composes a line from parts.
Because of this, it is generally a good idea to read through the output to check that it makes sense.
AUTHOR
Tim Waugh <twaugh@redhat.com>
Package maintainer
patchutils 23 January 2009 FLIPDIFF(1)