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Add -s support for du(1)

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This commit is contained in:
sin 2013-10-16 17:54:29 +01:00
parent 09fcbfc338
commit 6e8b79ebd8
2 changed files with 20 additions and 5 deletions
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3
du.1
View File

@ -16,3 +16,6 @@ directory is displayed.
.TP
.BI \-a
Display an entry for each file in the file hierarchy.
.TP
.BI \-s
Display only the grand total for the specified files.

22
du.c
View File

@ -14,8 +14,10 @@
static long blksize = 512;
static bool aflag = false;
static bool sflag = false;
static long du(const char *);
static void print(long n, char *path);
void
usage(void)
@ -27,11 +29,15 @@ int
main(int argc, char *argv[])
{
char *bsize;
long n;
ARGBEGIN {
case 'a':
aflag = true;
break;
case 's':
sflag = true;
break;
default:
usage();
} ARGEND;
@ -41,10 +47,15 @@ main(int argc, char *argv[])
blksize = estrtol(bsize, 0);
if (argc < 1) {
du(".");
n = du(".");
if (sflag)
print(n, realpath(".", NULL));
} else {
for (; argc > 0; argc--, argv++)
du(argv[0]);
for (; argc > 0; argc--, argv++) {
n = du(argv[0]);
if (sflag)
print(n, realpath(argv[0], NULL));
}
}
return EXIT_SUCCESS;
}
@ -106,7 +117,7 @@ du(const char *path)
} else {
m = 512 * st.st_blocks / blksize;
n += m;
if (aflag)
if (aflag && !sflag)
print(m, realpath(dent->d_name, NULL));
}
}
@ -115,6 +126,7 @@ du(const char *path)
}
}
print(n, realpath(path, NULL));
if (!sflag)
print(n, realpath(path, NULL));
return n;
}