测试代码

function pam_on()
{
    [ ! -f $PAM_BACKUP ] && cp $PAM_SSHD $PAM_BACKUP
    cat >$PAM_SSHD <<EOF
#%PAM-1.0
auth       required pam_sepermit.so
auth       include      password-auth
account    required     pam_nologin.so
#account    required    pam_access.so
account    requisite    pam_listfile.so item=user sense=allow file=$CONF onerr=succeed
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
# 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    optional     pam_keyinit.so force revoke
session    include      password-auth
EOF
 
    cat > $CONF <<EOF
root
user1
user2
EOF
 
    cat > $SUDO <<EOF
user1   ALL=(ALL)   NOPASSWD: ALL
user2   ALL=(ALL)   NOPASSWD: ALL
EOF
    
for u in `echo $1 | tr ',' ' '`;do
    echo "$u" >> $CONF
    echo "$u ALL=(ALL) NOPASSWD: ALL" >> $SUDO
done
}

put your markdown here

h1
xxx