I'm hoping someone can offer some insight on this problem, I found a solution to execute a script before an ssh login. It was done by placing the following line within /etc/pam.d/sshd and allowing pam authentication in /etc/ssh/sshd_config
session required pam_exec.so /home/pc/myScript.sh And it worked great, problem I noticed was that after exiting the SSH session the script would run again. This particular behavior completely breaks the purpose my script, is there any way to fix this? I suppose I could write-out/read-from a file on whether its time to execute but I'm wondering if there is a better way.
Additional info
- OS is Fedora Server ARM 29
- I determined the script ran twice by executing
wallon the shell script - Here's my /etc/pam.d/shhd
.
#%PAM-1.0 auth substack password-auth auth include postlogin account required pam_sepermit.so account required pam_nologin.so account include password-auth password include password-auth # pam_selinux.so close should be the first session rule session required pam_selinux.so close session required pam_loginuid.so ### My script session required pam_exec.so /home/pc/aScriptThatShouldOnlyRunOncePriorToLogin.sh ### # pam_selinux.so open should only be followed by sessions to be executed in the user context session required pam_selinux.so open env_params session required pam_namespace.so session optional pam_keyinit.so force revoke session optional pam_motd.so session include password-auth session include postlogin 
