Programs and Documentation
by: Keith Fenske
Copyright © 2011, 2014 by Keith Fenske. All rights reserved. Send
e-mail to fenske at psc dash consulting dot ca.
Most documentation here is in Adobe Acrobat PDF format. See the
download page for a free copy of Adobe Reader, or this
page for a list of alternative PDF software.
Many computer systems have their own PDF readers.
Java software on this web site is free and has been released under the
General Public License (GPL). The same Java programs will run on Linux,
MacOS, Windows, etc. You may need to download the Java
"run-time environment" first. All
packages are in ZIP
format and include brief installation instructions. See reviews on
GNU General Public License (GPL) programs are free to use, and free to
redistribute as-is without changes. Use of these programs is entirely at your
own risk. Please read
the license (long and
boring) or the frequently
asked questions (FAQ). You must agree to the GPL if you change a program or
its accessory files, or use any part elsewhere. The conditions of the GPL are
actually quite generous and ensure that you are equally generous.
- Character Map (Java, ZIP, 989
CharMap is a Java 5.0 graphical (GUI) application to display
characters or glyphs in text fonts, and copy those characters to the system
clipboard. Its major purpose is as a visual accessory for word processors
such as Microsoft Word. This Java application can be resized, for text
and the program window, which is important in many languages. Features
are limited to make the application faster and simpler to use. A single
click adds a character to the sample text, and the sample text is automatically
copied to the system clipboard on each click.
- Compare Folders (Java, ZIP,
CompareFolders is a Java 1.4 application to compare two folders to
determine if all files and subfolders are identical. The folders may be on the
same computer, on the local network, or they may be represented by checksum
files. Files or subfolders that are not the same are reported to the user.
Checksum files are used when the original files or folders are not available.
You may generate checksums for files and folders, and save those checksums in a
text file. You may compare two checksum files. You may compare a checksum file
and a folder of files. After you back up files to external media, and later
restore them, how will you know they are correct unless you have checksums from
the original files?
- Erase Disk (Java, ZIP, 221 KB)
EraseDisk is a Java 1.4 graphical (GUI) application to erase and test disk
drives or flash
drives. Large temporary files are created and filled with zeros, ones, or
pseudo-random data. Previously deleted files are overwritten. Existing files
are not affected. Don't trust a new drive until you write data, then read to
confirm. One complete test is usually enough. (Repeated testing may degrade
- File Checksum (Java, ZIP, 205
FileChecksum is a Java 1.4 application to compute common checksums for
files: CRC32, MD5, SHA1, and
optional SHA256 or SHA512. Checksums are small hexadecimal "signatures" for
testing whether or not files have been copied correctly, such as over a
network. One person sends a file along with the checksum computed on the
original computer. A second person calculates a similar checksum for the
received file, and if the two checksums agree, then the received file is
assumed to be correct. Many web sites provide MD5 signatures for their
downloads; use this program to verify files that you download. The MD5 for this
ZIP file is 48d10e89d5af7a8af03cbaa952cb66e2.
- File Redate Rename (Java,
ZIP, 216 KB)
FileDateName is a Java 1.4 graphical (GUI) application to rename multiple
files or to change their directory dates. The contents of the files are
not changed. Folders and subfolders may be searched recursively. Changes
may be applied to files only, both files and folders, or only the folders.
- Find Duplicate Files
(Java, ZIP, 206 KB)
FindDupFiles is a Java 1.4 application to find duplicate files by searching
for files that have the same size and the same MD5 checksum. It won't find
files that are merely similar, such as two consecutive photos of the same
subject, or two MP3 songs encoded at different times. Possible duplicates
are reported to the user, who can then verify that the files are identical,
either by inspection or by doing a byte-by-byte comparison with the "comp"
command on DOS/Windows or the "cmp" command on Linux. What to do with files
is the user's choice; the program does nothing except report the duplicates.
The probability of two different files having the same size and MD5 checksum
is extremely small.
- Font Rename (Java, ZIP, 264 KB)
FontRename is a Java 1.4 application to rename OpenType and TrueType
font files with their internal "font full name" using only plain text characters
(ASCII) plus an extension for the type (OTF, TTC, TTF), or using the full
Unicode character set in languages like Arabic, Chinese, Japanese, Korean,
and Russian. This gives consistent names to font files, no matter what
their source. The contents of the files are not changed, only the names
in the file directory. Don't use this program on system folders with installed
- Hex File Viewer (Java, ZIP,
HexView is a Java 1.4 graphical (GUI) application to display the contents
of a file in hexadecimal and as plain text (7-bit ASCII). Files may be very
large. Editing and searching are not supported.
- Icon Editor (Java, ZIP, 262 KB)
IconEdit is a Java 1.4 graphical (GUI) application to edit
files for Windows. An icon file can contain more than one image, in more
than one size. Supported sizes are from 8x8 to 255x255 pixels, with standard
sizes of 16x16, 24x24, 32x32, 48x48, and 64x64 pixels. All icons are square.
Colors may be 4-bit (16 colors), 8-bit (256 colors), or 24-bit (millions).
Pixels may be transparent and let the background show through. Macintosh
and Linux users can create FAVICON.ICO files for web pages with this program.
- Plain Text (Java, ZIP, 197 KB)
PlainText is a Java 1.4 graphical (GUI) application to convert Unicode
characters to plain text
characters, for example, to convert left and right quotation marks into
plain quotes for web pages. Since everyone has a different idea about what
"plain text" means, the conversion is controlled by a configuration file
that can be easily edited. The typical sequence of actions is to copy text
from a Unicode-aware application such as Microsoft Word, switch to this
Java application, click the "Paste" and "Convert" buttons, then copy the
converted text to another application that expects a more limited character
- Trim File (Java, ZIP, 171 KB)
TrimFile is a Java 1.4 console application to remove trailing white
space (blanks or tabs) from the end of each line in a plain text file.
Extra spaces commonly accumulate while editing source programs in a graphical
compiler (IDE). They aren't a problem, but they do waste file space and
occasionally affect the appearance of programs. Many character sets (encodings)
are supported, and you may convert between character sets or newline styles.
Small Java utility programs. No formal documentation. No support. Only Java
source code, compiled class files, and a public license (GNU GPL). See the
program comments and/or command-line help for information.
One person's essential utility is another person's indifference. Don't
criticize, don't complain, and if these programs aren't what you want, edit and
- Check Plain Trim (Java, ZIP,
CheckPlainTrim is a Java 1.4 console application to check if files are in
plain text and do not have trailing spaces or tabs (white space) at the end of
lines. Files must be in
the US-ASCII character set as
8-bit bytes. How clean are your source, text files, and XML documents?
- Show Folder Size (Java, ZIP,
ShowFolderSize is a Java 1.4 console application to display the total size
of files in a folder, with or without subfolders included. Redirect output to a
text file, and save
as CSV if
desired (comma-separated values).
- Sort FAT Folder (Java, ZIP,
SortFatFolder is a Java 1.4 console application to sort the directory
entries for a FAT16 or FAT32 file folder. Unlike newer file systems (NTFS), the
FAT file system does not keep directories in alphabetical order. This may be
important on some types of distribution media, e.g., USB thumb drives.
SortFatFolder has more exceptions than a mad squirrel in winter; read the
Copyright © 2011, 2014 by Keith Fenske. All rights
reserved. This page was last revised on Friday, 31 October 2014.