File patcher available with both GUI (on Windows) and command-line mode plus
various features. It uses some text files with the lpatch extension for the
list of operations to perform on the target file to patch.

These text files are trivial to create and edit and allow to specify comments,
the default name of the file to patch, an introduction to display before apply
the patch, MD5 hash verification, the modification of a byte at a specific
offset, the substituition of a sequence of bytes or a string, wildcards and
more.

Exists also an older version of "patch files" used for substituiting bytes at
fixed offsets and are identified by the lpatch.dat name.

On Windows the tool can also be used to patch a running process and
launching+patching it.

Installation:

Copy mlpatch lpatch SYS:C/

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                23086   55376  41.7% -lh5- 4170 Mar 12 12:08 lpatch-0.4.4b/lpatch
[unknown]                  554    1000  55.4% -lh5- 08d2 Mar 12 12:35 lpatch-0.4.4b/lpatch.readme
[unknown]                 1749    4431  39.5% -lh5- 8d3a Feb 10  2010 lpatch-0.4.4b/lpatch.txt
[unknown]                 9132   23520  38.8% -lh5- 055b Mar 12 12:08 lpatch-0.4.4b/mlpatch
[unknown]                 3869   11941  32.4% -lh5- 191a Feb 10  2010 lpatch-0.4.4b/src/iofuncs.h
[unknown]                 4352   14525  30.0% -lh5- 09b3 Oct 30  2011 lpatch-0.4.4b/src/lpatch.c
[unknown]                12155   50333  24.1% -lh5- 15be Mar 12 12:01 lpatch-0.4.4b/src/lpatch_newmode.h
[unknown]                  230     483  47.6% -lh5- d02e Mar 12 12:06 lpatch-0.4.4b/src/Makefile
[unknown]                 4387   15380  28.5% -lh5- cf89 Feb  7  2009 lpatch-0.4.4b/src/md5.c
[unknown]                 1184    3765  31.4% -lh5- 4fef Jan  4  2009 lpatch-0.4.4b/src/md5.h
[unknown]                 1823    4858  37.5% -lh5- 7363 Oct 30  2011 lpatch-0.4.4b/src/mlpatch.c
[unknown]                 1606    5928  27.1% -lh5- 2ded Feb  7  2009 lpatch-0.4.4b/src/pe_nonwin.h
[unknown]                 2307    6891  33.5% -lh5- 382a Feb 10  2010 lpatch-0.4.4b/src/process.h
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        13 files   66434  198431  33.5%            Mar 12 22:05