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du: Update usage and document -P as well

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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
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@ -1,4 +1,4 @@
.Dd January 30, 2015 .Dd February 17, 2015
.Dt DU 1 .Dt DU 1
.Os sbase .Os sbase
.Sh NAME .Sh NAME
@ -8,10 +8,9 @@
.Nm .Nm
.Op Fl a | s .Op Fl a | s
.Op Fl d Ar depth .Op Fl d Ar depth
.Op Fl H
.Op Fl L
.Op Fl h .Op Fl h
.Op Fl k .Op Fl k
.Op Fl H | L | P
.Op Ar file ... .Op Ar file ...
.Sh DESCRIPTION .Sh DESCRIPTION
.Nm .Nm
@ -26,13 +25,10 @@ is displayed.
.Bl -tag -width Ds .Bl -tag -width Ds
.It Fl a .It Fl a
Display an entry for each file in the file hierarchy. 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 .It Fl d Ar depth
Maximum directory depth to print files and directories. 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 .It Fl h
Enable human-readable output. Enable human-readable output.
.It Fl k .It Fl k
@ -40,6 +36,11 @@ By default all sizes are reported in 512-byte block counts.
The The
.Fl k .Fl k
option causes the numbers to be reported in kilobyte counts. option causes the numbers to be reported in kilobyte counts.
.It Fl s .It Fl H
Display only the grand total for the specified files. 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 .El

11
du.c
View File

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