Environment variable

There exist several environment variables concerning with an execution of Asir. On UNIX, an environment variable is set from shells, or in rc files of shells. On Windows NT, it can be set from [Control Panel] ->[Environment]. On Windows 95/98, it can be set in `c:\autoexec.bat'. Note that the setting takes effect after rebooting the machine on Windows 95/98.

• ASIR_KEY
  Asir shall not work unless a key for the machine on which Asir is invoked is given. The key consists of a string which denotes 3 word hexadecimal number, each of which has 8 hexadecimal digits. In order to run Asir for several machines, several key's can be written together on a same file as follows.

  % cat asir_key
  cf6f236c 61a35091 dddc4529 geisha
  82281685 d1929945 a8bd24ca yorktown
  34b75d30 63f8df93 3e881113 nyanchu
  

  The text after each key is neglected to the end-of-line. This is convenient to comment on the respective key. Files containing key's are searched by the following order.
  1. File set to environment ASIR_KEY
  2. File `asir_key' on the current directory.
  3. Files on the directory specified by environment ASIR_LIBDIR. (File `asir_key' on `/usr/local/lib/asir/', if environment ASIR_LIBDIR is not set.)
• ASIR_LIBDIR
  The library directory of Asir, i.e., the directory where , for example, files containing programs written in Asir. If not specified, on UNIX, `/usr/local/lib/asir' is used by default. On Windows, `lib' in Asir root directory is used by default. This environment will be useful in a case where Asir binaries are installed on a private directory of the user.
• ASIRLOADPATH
  This environment specifies directories which contains files to be loaded by Asir command load(). Directories are separated by a `:' on UNIX, a ';' on Windows respectively. The search order is from the left to the right. After searching out all directories in ASIRLOADPATH, or in case of no specification at all, the library directory will be searched.
• HOME
  If Asir is invoked without -norc, `$HOME/.asirrc', if exists, is executed. If HOME is not set, nothing is done on UNIX. On Windows, `.asirrc' in Asir root directory is executed if it exists.

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