IP2NAME(LOCAL)      UNIX Programmer's Manual       IP2NAME(LOCAL)

NAME
     ip2name - convert IP addresses to their DNS names

SYNOPSIS
     ip2name [-i|-I] [-f] [-g] [files|IP]

DESCRIPTION
     If ip2name is given a single IP address on the command line,
     it will look it up and emit the corresponding name on stan-
     dard output.  In this mode, the exit status is 0 if a name
     was found and 1 otherwise.

     If no IP address is given on the command line, arguments are
     interpreted as filenames to process, or if there are no
     filenames, standard input is processed.

     File processing consists of reading lines, augmenting them
     if possible as described below, and writing them to standard
     output.  Augmentation consists of searching for sequences
     which look like IP addresses, and either appending the DNS
     name (if found) to the end of the line or replacing it in-
     situ if the -i or -I flag is given.

     In order to keep the format of the input correct, the -i
     form of in-situ replacement will truncate a DNS name if it
     doesn't fit in the space used by the IP address (and its
     trailing spaces) however the -I form will do no such trunca-
     tion and will grow the line if necessary.

     Only the first IP address on each line will be recognized
     unless the -g flag is given.

     During file processing, unless -f is given,
     ".washington.edu" is stripped off the end of DNS names
     before they are put in a line.

BUGS
     For backward compatibility, .washington.edu is not stripped
     in the mode where the IP address is given on the command
     line.

AUTHOR
     Corey Satten corey @ cac.washington.edu