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pwd -LP

This commit is contained in:
Connor Lane Smith 2011-05-28 15:37:42 +01:00
parent 0a3a8c55e4
commit 3172b979dc
5 changed files with 48 additions and 6 deletions
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2
ln.1
View File

@ -19,7 +19,7 @@ be linked into the given directory.
.SH OPTIONS
.TP
.B \-s
create a symbolic link.
create a symlink.
.SH SEE ALSO
.IR cp (1),
.IR link (2),

4
ls.c
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@ -186,8 +186,8 @@ output(Entry *ent)
if(ent->mode & S_IWOTH) mode[8] = 'w';
if(ent->mode & S_IXOTH) mode[9] = 'x';
if(ent->mode & S_ISUID) mode[3] = (mode[3] == 'x' ? 's' : 'S');
if(ent->mode & S_ISGID) mode[6] = (mode[6] == 'x' ? 's' : 'S');
if(ent->mode & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
if(ent->mode & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
errno = 0;
pw = getpwuid(ent->uid);

9
pwd.1
View File

@ -3,8 +3,17 @@
pwd \- print working directory
.SH SYNOPSIS
.B pwd
.RB [ \-LP ]
.SH DESCRIPTION
.B pwd
prints the path of the current working directory.
.SH OPTIONS
.TP
.B \-L
logical path, uses $PWD (default).
.TP
.B \-P
physical path, avoids all symlinks.
.SH SEE ALSO
.IR cd (1),
.IR getcwd (3)

37
pwd.c
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@ -1,11 +1,44 @@
/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include "util.h"
static const char *getpwd(const char *cwd);
int
main(void)
main(int argc, char *argv[])
{
puts(agetcwd());
char *cwd, c;
char mode = 'L';
while((c = getopt(argc, argv, "LP")) != -1)
switch(c) {
case 'L':
case 'P':
mode = c;
break;
default:
exit(EXIT_FAILURE);
}
cwd = agetcwd();
puts((mode == 'L') ? getpwd(cwd) : cwd);
return EXIT_SUCCESS;
}
const char *
getpwd(const char *cwd)
{
const char *pwd;
struct stat cst, pst;
if(!(pwd = getenv("PWD")) || pwd[0] != '/' || stat(pwd, &pst) != 0)
return cwd;
if(stat(cwd, &cst) != 0)
eprintf("stat %s:", cwd);
if(pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino)
return pwd;
else
return cwd;
}

2
touch.c
View File

@ -50,7 +50,7 @@ touch(const char *str)
eprintf("stat %s:", str);
if(cflag)
return;
if((fd = creat(str, O_RDONLY|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0)
if((fd = creat(str, O_EXCL|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0)
eprintf("creat %s:", str);
close(fd);
}