ls: Implement -c and update manpage
Update usage + README as well. Apparently some of the options ( -H and -L) had already been implemented but not reflected in the program usage line.
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2
README
2
README
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@ -40,7 +40,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
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= ln yes none
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=* logger yes none
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= logname yes none
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= ls no -C, -H, -L, -R, -c, -q, -u
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= ls no -C, -R, -q, -u
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md5sum non-posix none
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= mkdir yes none
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= mkfifo yes none
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87
ls.1
87
ls.1
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@ -1,49 +1,46 @@
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.TH LS 1 sbase\-VERSION
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.SH NAME
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ls \- list directory contents
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.SH SYNOPSIS
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.B ls
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.RB [ \-adFHhiLlrtU ]
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.RI [ file ...]
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.SH DESCRIPTION
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.B ls
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.Dd January 20, 2015
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.Dt LS 1 sbase\-VERSION
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.Sh NAME
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.Nm ls
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.Nd list directory contents
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.Sh SYNOPSIS
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.Nm ls
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.Op Fl 1acdFHhiLlrtU
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.Op Ar file ...
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.Sh DESCRIPTION
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.Nm
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lists each given file, and the contents of each given directory. If no files
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are given the current directory is listed.
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.SH OPTIONS
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.TP
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.B \-a
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shows hidden files (those beginning with '.').
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.TP
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.B \-d
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lists directories themselves, not their contents.
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.TP
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.B \-F
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append a file type indicator to files.
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.TP
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.B \-H
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list information about the targets of symbolic links specified on the command
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl a
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Show hidden files (those beginning with '.').
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.It Fl c
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Use time file's status was last changed instead of last
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modification time for sorting or printing.
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.It Fl d
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List directories themselves, not their contents.
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.It Fl F
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Append a file type indicator to files.
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.It Fl H
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List information about the targets of symbolic links specified on the command
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line instead of the links themselves.
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.TP
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.B \-h
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show filesizes in human\-readable format.
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.TP
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.B \-i
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print the index number of each file.
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.TP
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.B \-L
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list information about the targets of symbolic links instead of the links
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.It Fl h
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Show filesizes in human\-readable format.
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.It Fl i
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Print the index number of each file.
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.It Fl L
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List information about the targets of symbolic links instead of the links
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themselves.
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.B \-l
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lists detailed information about each file, including their type, permissions,
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links, owner, group, size, and modification time.
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.TP
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.B \-r
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reverses the sort order.
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.TP
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.B \-t
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sorts files by modification time instead of by name.
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.TP
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.B \-U
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keeps the list unsorted.
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.SH SEE ALSO
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.IR stat (2)
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.It Fl l
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List detailed information about each file, including their type, permissions,
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links, owner, group, size, and last file status/modification time.
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.It Fl r
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Reverse the sort order.
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.It Fl t
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Sort files by last file status/modification time instead of by name.
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.It Fl U
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Keep the list unsorted.
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.El
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.Sh SEE ALSO
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.Xr stat 2
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16
ls.c
16
ls.c
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@ -18,7 +18,7 @@ typedef struct {
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uid_t uid;
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gid_t gid;
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off_t size;
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time_t mtime;
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time_t t;
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ino_t ino;
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} Entry;
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@ -29,6 +29,7 @@ static void mkent(Entry *, char *, int, int);
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static void output(Entry *);
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static int aflag = 0;
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static int cflag = 0;
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static int dflag = 0;
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static int Fflag = 0;
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static int Hflag = 0;
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@ -45,7 +46,7 @@ static int many;
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static void
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usage(void)
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{
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eprintf("usage: %s [-1adFhilrtU] [FILE...]\n", argv0);
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eprintf("usage: %s [-1acdFHhiLlrtU] [file ...]\n", argv0);
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}
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int
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@ -61,6 +62,9 @@ main(int argc, char *argv[])
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case 'a':
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aflag = 1;
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break;
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case 'c':
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cflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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@ -116,7 +120,7 @@ entcmp(const void *va, const void *vb)
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const Entry *a = va, *b = vb;
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if (tflag)
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return b->mtime - a->mtime;
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return b->t - a->t;
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else
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return strcmp(a->name, b->name);
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}
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@ -196,7 +200,7 @@ mkent(Entry *ent, char *path, int dostat, int follow)
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ent->uid = st.st_uid;
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ent->gid = st.st_gid;
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ent->size = st.st_size;
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ent->mtime = st.st_mtime;
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ent->t = cflag ? st.st_ctime : st.st_mtime;
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ent->ino = st.st_ino;
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if (S_ISLNK(ent->mode))
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ent->tmode = stat(path, &st) == 0 ? st.st_mode : 0;
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@ -284,12 +288,12 @@ output(Entry *ent)
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else
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snprintf(grname, sizeof(grname), "%d", ent->gid);
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if (time(NULL) > ent->mtime + (180*24*60*60)) /* 6 months ago? */
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if (time(NULL) > ent->t + (180*24*60*60)) /* 6 months ago? */
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fmt = "%b %d %Y";
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else
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fmt = "%b %d %H:%M";
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strftime(buf, sizeof buf, fmt, localtime(&ent->mtime));
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strftime(buf, sizeof buf, fmt, localtime(&ent->t));
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printf("%s %4ld %-8.8s %-8.8s ", mode, (long)ent->nlink, pwname, grname);
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if (hflag)
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printf("%10s ", humansize((unsigned long)ent->size));
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