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du: Update usage and document -P as well

This commit is contained in:
sin 2015-02-17 16:07:10 +00:00
parent e5b5497773
commit 6c31f1d2a8
2 changed files with 17 additions and 15 deletions
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21
du.1
View File

@ -1,4 +1,4 @@
.Dd January 30, 2015
.Dd February 17, 2015
.Dt DU 1
.Os sbase
.Sh NAME
@ -8,10 +8,9 @@
.Nm
.Op Fl a | s
.Op Fl d Ar depth
.Op Fl H
.Op Fl L
.Op Fl h
.Op Fl k
.Op Fl H | L | P
.Op Ar file ...
.Sh DESCRIPTION
.Nm
@ -26,13 +25,10 @@ is displayed.
.Bl -tag -width Ds
.It Fl a
Display an entry for each file in the file hierarchy.
.It Fl s
Display only the grand total for the specified files.
.It Fl d Ar depth
Maximum directory depth to print files and directories.
.It Fl H
Only dereference symbolic links that are passed as command line arguments when
recursively traversing directories.
.It Fl L
Always dereference symbolic links while recursively traversing directories.
.It Fl h
Enable human-readable output.
.It Fl k
@ -40,6 +36,11 @@ By default all sizes are reported in 512-byte block counts.
The
.Fl k
option causes the numbers to be reported in kilobyte counts.
.It Fl s
Display only the grand total for the specified files.
.It Fl H
Only dereference symbolic links that are passed as command line arguments when
recursively traversing directories.
.It Fl L
Always dereference symbolic links while recursively traversing directories.
.It FL P
Don't dereference symbolic links. This is the default.
.El

11
du.c
View File

@ -21,7 +21,7 @@ static int dflag = 0;
static int sflag = 0;
static int kflag = 0;
static int hflag = 0;
static int HLflag = 'P';
static int HLPflag = 'P';
static char *
xrealpath(const char *pathname, char *resolved)
@ -138,7 +138,7 @@ done:
static void
usage(void)
{
eprintf("usage: %s [-a | -s] [-d depth] [-h] [-k] [file ...]\n", argv0);
eprintf("usage: %s [-a | -s] [-d depth] [-h] [-k] [-H | -L | -P] [file ...]\n", argv0);
}
int
@ -166,7 +166,8 @@ main(int argc, char *argv[])
break;
case 'H':
case 'L':
HLflag = ARGC();
case 'P':
HLPflag = ARGC();
break;
default:
usage();
@ -183,13 +184,13 @@ main(int argc, char *argv[])
blksize = 1024;
if (argc < 1) {
n = du(".", HLflag);
n = du(".", HLPflag);
if (sflag)
print(n, xrealpath(".", file));
} else {
for (; argc > 0; argc--, argv++) {
curdepth = 0;
n = du(argv[0], HLflag);
n = du(argv[0], HLPflag);
if (sflag)
print(n, xrealpath(argv[0], file));
}