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Update usage & SYNOPSIS and clarify that input files are not removed.

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Sort getopt option handling of -p too, while here.

The changes are adapted from a patch by Ruslan Ermilov, posted as
followup to docs/33852.

PR:             docs/33852
Submitted by:   Gary W. Swearingen <swear@blarg.net>
MFC after:      1 week
This commit is contained in:
Giorgos Keramidas 2006-08-08 21:25:22 +00:00
parent 49953e11d7
commit 49198c4297
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=161106
2 changed files with 30 additions and 18 deletions
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32
usr.bin/split/split.1
View File

@ -32,7 +32,7 @@
.\" @(#)split.1 8.3 (Berkeley) 4/16/94
.\" $FreeBSD$
.\"
.Dd August 21, 2005
.Dd August 9, 2006
.Dt SPLIT 1
.Os
.Sh NAME
@ -40,17 +40,29 @@
.Nd split a file into pieces
.Sh SYNOPSIS
.Nm
.Op Fl a Ar suffix_length
.Op Fl b Ar byte_count Ns Op Cm k Ns | Ns Cm m
.Op Fl l Ar line_count
.Op Fl p Ar pattern
.Op Ar file Op Ar name
.Op Fl a Ar suffix_length
.Op Ar file Op Ar prefix
.Nm
.Fl b Ar byte_count Ns
.Oo
.Cm k Ns | Ns Cm m
.Oc
.Op Fl a Ar suffix_length
.Op Ar file Op Ar prefix
.Nm
.Fl p Ar pattern
.Op Fl a Ar suffix_length
.Op Ar file Op Ar prefix
.Sh DESCRIPTION
The
.Nm
utility reads the given
.Ar file
and breaks it up into files of 1000 lines each.
and breaks it up into files of 1000 lines each
(if no options are specified), leaving the
.Ar file
unchanged.
If
.Ar file
is a single dash
@ -60,7 +72,7 @@ or absent,
reads from the standard input.
.Pp
The options are as follows:
.Bl -tag -width Ds
.Bl -tag -width indent
.It Fl a Ar suffix_length
Use
.Ar suffix_length
@ -81,7 +93,7 @@ is appended to the number, the file is split into
megabyte pieces.
.It Fl l Ar line_count
Create smaller files
.Ar n
.Ar line_count
lines in length.
.It Fl p Ar pattern
The file is split whenever an input line matches
@ -103,13 +115,13 @@ In this case, each file into which the file is split is named by the
prefix followed by a lexically ordered suffix using
.Ar suffix_length
characters in the range
.Dq Li a-z .
.Dq Li a Ns - Ns Li z .
If
.Fl a
is not specified, two letters are used as the suffix.
.Pp
If the
.Ar name
.Ar prefix
argument is not specified, the file is split into lexically ordered
files named with the prefix
.Dq Li x

16
usr.bin/split/split.c
View File

@ -130,11 +130,6 @@ main(int argc, char **argv)
errx(EX_USAGE, "%s: offset too large", optarg);
bytecnt = (off_t)(bytecnti * scale);
break;
case 'p' : /* pattern matching. */
if (regcomp(&rgx, optarg, REG_EXTENDED|REG_NOSUB) != 0)
errx(EX_USAGE, "%s: illegal regexp", optarg);
pflag = 1;
break;
case 'l': /* Line count. */
if (numlines != 0)
usage();
@ -142,6 +137,11 @@ main(int argc, char **argv)
errx(EX_USAGE,
"%s: illegal line count", optarg);
break;
case 'p': /* pattern matching. */
if (regcomp(&rgx, optarg, REG_EXTENDED|REG_NOSUB) != 0)
errx(EX_USAGE, "%s: illegal regexp", optarg);
pflag = 1;
break;
default:
usage();
}
@ -335,8 +335,8 @@ static void
usage(void)
{
(void)fprintf(stderr,
"usage: split [-a sufflen] [-b byte_count] [-l line_count] [-p pattern]\n");
(void)fprintf(stderr,
" [file [prefix]]\n");
"usage: split [-l line_count] [-a suffix_length] [file [prefix]]\n"
" split -b byte_count[k|m] [-a suffix_length] [file [prefix]]\n"
" split -p pattern [-a suffix_length] [file [prefix]]\n");
exit(EX_USAGE);
}