*Install_Update

Installer

» *Commands

» *Install_Update

*Install_Update

Use

This *Command copies a file if source_file is newer than dest_file.

Syntax

*Install_Remove source_file dest_file

Parameters

Notes

Any overwritten file is first copied into the backup directory, and details of the operation are appended to the log file.

In the case of modules, the version number multiplied by 100 is appended to the name of the file in the backup directory, and the old and new version numbers are mentioned in the log file.

In the case of fonts, the Messages files in the first application directory above dest_file are updated to include any new font.

The comparative newness of files is determined by the following steps:

• if both files are modules, the version number of the modules (or if they match, the datestamps of the files);
• otherwise, a simple datestamp comparison is used; in certain special cases, the datstamp is determined by a special method:
  • untyped files are assigned a datestamp of the beginning of time;
  • fonts are assigned the most recent datestamp of the files in the font directory (non-recursively);
  • directories are assigned the most recent datestamp of the files in the directory (recursively);
  • voids (where there is currently nothing) are checked to see if they are located below a file, rather than a directory; if the former, then the file’s datestamp is used.

See also

• *Install_Remove