Index: /issm/trunk-jpl/scripts/mail
===================================================================
--- /issm/trunk-jpl/scripts/mail	(revision 12151)
+++ /issm/trunk-jpl/scripts/mail	(revision 12151)
@@ -0,0 +1,158 @@
+#!/bin/sh
+
+# This is a shell script to emulate the standard mail(1) aka mailx(1)
+# aka Mail(1) tool usage for sending emails. This shell script is not
+# a client for checking or reading mail. Also, this version of mail
+# does not touch any mail boxes.
+
+# Copyright (c) 2003 by Jeremy C. Reed
+# This software is provided "as is" without any warranties. You may
+# redistribute and use this source, with or without modification,
+# as long as you include this copyright and disclaimer.
+
+# To do: some switches to consider:
+# -v  display details of delivery
+# -E  do not send empty messages
+# -c  send carbon copies to users
+# -b  send blind carbon copies
+
+# todo: test if read can read in long enough lines
+# some shells may have limit of 256 characters per read?
+ 
+SENDMAIL=sendmail  # set to path of your sendmail(8) command
+SENDMAIL_ARGS="-t -i" # -i is so dot doesn't terminate message
+                      # -t is to get recipients from headers
+
+unset subject
+unset to_addr
+dontsendempty=0
+
+about ()
+{
+  echo "This is mailx.sh version 0.03. This is simple, shell script"
+  echo "to implement mailx(1) functionality for sending mail. It does"
+  echo "not provide an interface for checking or reading email messages."
+  echo
+
+  # maybe do this without forking a command
+  mailname=$( basename $0 )
+
+  if [ -n "$1" ] ; then
+    echo "$mailname: $1" 1>&2
+  fi
+
+  echo "Usage: $mailname [-s subject] to-addr ..." 1>&2
+
+  if [ -n "$1" ] ; then
+    if [ -n "$2" ] ; then 
+      exit $2
+    fi
+    exit 100
+  fi
+
+  exit 0
+}
+
+if [ $# -eq 0 ] ; then
+  about "Sorry, this is not a mail reader." 1
+fi
+
+while [ -n "$1" ] ; do
+  case "$1" in
+  -*)
+      if [ "$1" = "-s" ] ; then
+        if [ -z "$2" ] ; then
+          about "The \"-s\" option requires an argument." 4
+        fi
+        subject="$2"
+        shift
+      elif [ "$1" = "-u" -o "$1" = "-f" ] ; then
+        about "Sorry, this is not a mail reader." 2
+#      elif [ "$1" = "-E" ] ; then
+# this probably needs to have entire message saved to temp file first
+#        dontsendempty=1
+      else
+#        about "unknown option -- $1" 3
+        about "Switch \"$1\" is not implemented." 3
+      fi
+      ;;
+  *)  if [ -n "$to_addr" ] ; then
+        to_addr="${to_addr}, $1"
+      else
+        to_addr="$1"
+      fi
+      ;;
+  esac
+  shift
+done
+
+
+if [ -t 0 ] ; then   # no piped in standard input
+  if [ -z "$subject" ] ; then
+    echo -n "Subject: "
+    OLD_IFS=$IFS
+    IFS=""
+    read -r subject
+    IFS=$OLD_IFS
+  fi
+fi
+
+if [ -z "$to_addr" ] ; then
+  about "No recipients specified." 6
+#  about "You must specify recipients." 6
+fi
+
+# generate SMTP headers
+
+# mail(1) doesn't seem to set date
+#date +"Date: %a, %e %b %G %T %z"
+## maybe pipe though sed to get rid of extra space
+## before single digit day of month?
+
+{
+# if [ -n "$to_addr" ] ; then
+echo "To: ${to_addr}"
+# fi
+
+if [ -n "$subject" ] ; then
+  echo "Subject: $subject"
+fi
+
+# end of headers
+echo ""
+
+# output
+line_count=0
+OLD_IFS=$IFS
+IFS=""
+while read -r line ; do
+  # finish if manual, non-piped input is a period on a line by itself
+  if [ "$line" = "." -a -t 0 ] ; then
+      break
+  fi
+  echo "$line"
+  line_count=$(( line_count + 1 ))
+done
+
+IFS=$OLD_IFS
+
+if [ -t 0 ] ; then   # no piped in standard input
+  echo "EOT" 1>&2
+fi
+
+# later add switch to not send mail by exiting
+if [ "$line_count" -eq 0 ] ; then
+#  if [ "$dontsendempty" -eq 1 ] ; then
+# todo this, have it save to temp file and then send to sendmail as needed
+#    # No message, so just exit cleanly
+#    exit 0
+#  fi
+  if [ -z "$subject" ] ; then
+    echo "No message, no subject; hope that's ok" 1>&2
+  else
+    echo "Null message body; hope that's ok" 1>&2
+  fi
+fi
+
+} | $SENDMAIL $SENDMAIL_ARGS
+