03-29-2015
There are a few things we could do to speed up processing 690,000 files, but we need a few more details to come up with something that stands a chance of working correctly and reasonably quickly. (Nothing reading 690,000 files is going to be quick, but there may be a difference between slow and SSSSLLLLLOOOOWWWW.)
- Do any of the filenames you need to move contain any of the characters, <space>, <tab>, <newline>, <single-quote>, or <double-quote>? If so, which of these characters might appear in your filenames? If some of these characters do appear in your filenames, do they appear in all of your filenames? If not, how many of your filenames (that will be moved) will contain any of these characters?
- Are all of the files you need to evaluate:
- in a single directory?
- in a single directory hierarchy?
- in several single directories?
- in several directory hierarchies?
If they are in single directories, do any of those directories contain any subdirectories?
- Are all of the selected files going to a single directory? Or, if the files are coming from a directory hierarchy, is the hierarchy to be copied to the destination directory?
- What is the minimum size, maximum size, and approximate average size (in bytes) of the files you need to evaluate?
- Is it really true that all that needs to be checked is that there are three or more hyphens on the 3rd line of a file, or do we need to verify that the line starts with a [, ends with a ], and contains at least three hyphens surrounded by one of more lowercase letters?
- Out of the 690,000 files you need to process; how many do you expect will be moved?
This User Gave Thanks to Don Cragun For This Post:
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HLS(1) General Commands Manual HLS(1)
NAME
hls - list files in an HFS directory
SYNOPSIS
hls [options] [hfs-path ...]
DESCRIPTION
hls lists files and directories contained in an HFS volume. If one or more arguments are given, each specified file or directory is shown;
otherwise, the contents of the current working directory are shown.
OPTIONS
-1 Output is formatted such that each entry appears on a single line. This is the default when stdout is not a terminal.
-a All files and directories are shown, including "invisible" files, as would be perceived by the Macintosh Finder. Normally invisible
files are omitted from directory listings.
-b Special characters are displayed in an escaped backslash notation. Normally special or non-printable characters in filenames are
replaced by a question mark (?).
-c Sort and display entries by their creation date, rather than their modification date.
-d List directory entries themselves rather than their contents. Normally the contents are shown for named directories on the command-
line.
-f Do not sort directory contents; list them in the order they appear in the directory. This option effectively enables -a and -U and
disables -l, -s, and -t.
-i Show the catalog IDs for each entry. Every file and directory on an HFS volume has a unique catalog ID.
-l Display entries in long format. This format shows the entry type ("d" for directory or "f" for file), flags ("i" for invisible),
file type and creator (four-character strings for files only), size (number of directory sub-contents or file resource and data
bytes, respectively), date of last modification (or creation, with -c flag), and pathname. Macintosh "locked" files are indicated by
"F" in place of "f".
-m Display entries in a continuous format separated by commas.
-q Replace special and non-printable characters in displayed filenames with question marks (?). This is the default when stdout is con-
nected to a terminal.
-r Sort entries in reverse order before displaying.
-s Show the file size for each entry in 1K block units. The size includes blocks used for both data and resource forks.
-t Sort and display entries by time. Normally files will be sorted by name. This option uses the last modification date to sort unless
-c is also specified.
-x Display entries in column format like -C, but sorted horizontally into rows rather than columns.
-w width
Format output lines suitable for display in the given width. Normally the width will be determined from your terminal, from the
environment variable COLUMNS, or from a default value of 80.
-C Display entries in column format with entries sorted vertically. This is the default output format when stdout is connected to a
terminal.
-F Cause certain output filenames to be followed by a single-character flag indicating the nature of the entry; directories are fol-
lowed by a colon (:) and executable Macintosh applications are followed by an asterisk (*).
-N Cause all filenames to be output verbatim without any escaping or question-mark substitution.
-Q Cause all filenames to be enclosed within double-quotes (") and special/non-printable characters to be properly escaped.
-R For each directory that is encountered in a listing, recursively descend into and display its contents.
-S Sort and display entries by size. For files, the combined resource and data lengths are used to compute a file's size.
-U Do not sort directory contents; list them in the order they appear in the directory. On HFS volumes, this is usually an alphabetical
case-insensitive ordering, although there are some idiosyncrasies to the Macintosh implementation of ordering. This option does not
affect -a, -l, or -s.
SEE ALSO
hfsutils(1), hcd(1), hpwd(1), hdir(1), hcopy(1)
FILES
$HOME/.hcwd
AUTHOR
Robert Leslie <rob@mars.org>
HFSUTILS
14-Jan-1997 HLS(1)