using pam_exec to send pushover.net notifications of all logins (ssh, scp)

pushovernet.sh

Credit to @feldpos for providing the original version of this file, designed for inclusion into a .bashrc etc file

$ ls -l /etc/pam.d/pushovernet.sh
-rwxr-xr-x  1 root  wheel  485 Mar 22 14:48 /etc/pam.d/pushovernet.sh
$ cat /etc/pam.d/pushovernet.sh 
#!/bin/sh
(if [ "${PAM_SM_FUNC}" == "pam_sm_open_session" ]; then
    P_KEY="YOUR USER KEY HERE"
    P_TOKEN="YOUR APP TOKEN HERE"
    P_MSG="${PAM_USER} logged in to $(hostname) from ${PAM_RHOST} via ${PAM_SERVICE}"
    P_DATE=`date +%s`
    P_TITLE="Logins"

    nohup /usr/local/bin/curl -q -s     \
      --form-string "token=$P_TOKEN"    \
      --form-string "user=$P_KEY"       \
      --form-string "message=$P_MSG"    \
      --form-string "timestamp=$P_DATE" \
      --form-string "title=$P_TITLE"    \
      https://api.pushover.net/1/messages.json > /dev/null 2>&1 &
fi)

sshd pamd

add this line to the bottom of /etc/pam.d/sshd

session          optional       pam_exec.so             /etc/pam.d/pushovernet.sh

the results

Login: dan logged in to empty.int.unixathome.org from 10.1.1.1 via sshd

Using ubuntu? Replace:
if [ "${PAM_SM_FUNC}" == "pam_sm_open_session" ]; then
With:
if [ "${PAM_TYPE}" == "open_session" ]; then