that's all files
1.  this is tomcat9.service  that is on tomcat9 debian package
----------
#
# Systemd unit file for Apache Tomcat
#

[Unit]
Description=Apache Tomcat 9 Web Application Server
Documentation=https://tomcat.apache.org/tomcat-9.0-doc/index.html
After=network.target

[Service]

# Configuration
Environment="CATALINA_HOME=/usr/share/tomcat9"
Environment="CATALINA_BASE=/var/lib/tomcat9"
Environment="CATALINA_TMPDIR=/tmp"
Environment="JAVA_OPTS=-Djava.awt.headless=true"

# Lifecycle
Type=simple
ExecStartPre=+/usr/libexec/tomcat9/tomcat-update-policy.sh
ExecStart=/bin/sh /usr/libexec/tomcat9/tomcat-start.sh
SuccessExitStatus=143
Restart=on-abort

# Logging
SyslogIdentifier=tomcat9

# Security
User=tomcat
Group=tomcat
PrivateTmp=yes
AmbientCapabilities=CAP_NET_BIND_SERVICE
NoNewPrivileges=true
CacheDirectory=tomcat9
CacheDirectoryMode=750
ProtectSystem=strict
ReadWritePaths=/etc/tomcat9/Catalina/
ReadWritePaths=/var/lib/tomcat9/webapps/
ReadWritePaths=/var/log/tomcat9/
RequiresMountsFor=/var/log/tomcat9 /var/lib/tomcat9

[Install]
WantedBy=multi-user.target
------------------------------------------------------------- end of tomcat9.service

2.  this is the output of the command
$sysd2v-0.3.sh  tomcat9.service
-------------------------------------------------------------
#!/bin/sh
# Generated by sysd2v v0.3  --  http://www.trek.eu.org/devel/sysd2v
# kFreeBSD do not accept scripts as interpreters, using #!/bin/sh and sourcing.
if [ true != "$INIT_D_SCRIPT_SOURCED" ] ; then
    set "$0" "$@"; INIT_D_SCRIPT_SOURCED=true . /lib/init/init-d-script
fi
### BEGIN INIT INFO
# Provides:       tomcat9
# Required-Start: $remote_fs
# Required-Stop:  $remote_fs
# Should-Start:   $network
# Should-Stop:    $network
# Default-Start:  2 3 4 5
# Default-Stop:   0 1 6
# Description:    Apache Tomcat 9 Web Application Server
### END INIT INFO
set -a
CACHE_DIRECTORY=/var/cache/tomcat9
"CATALINA_HOME=/usr/share/tomcat9"
"CATALINA_BASE=/var/lib/tomcat9"
"CATALINA_TMPDIR=/tmp"
"JAVA_OPTS=-Djava.awt.headless=true"
set +a

DESC=\"tomcat9\"
DAEMON=/bin/sh
DAEMON_ARGS=\"/usr/libexec/tomcat9/tomcat-start.sh\"
PIDFILE=/var/run/tomcat9-sysd2v.pid
START_ARGS=\"--user tomcat --chuid tomcat --background --make-pidfile\"
STOP_ARGS=\"--user tomcat\"

do_start_cmd_override ()
{
  install -d -o tomcat -g tomcat -m 750 /var/cache/tomcat9 || return 2
  /usr/libexec/tomcat9/tomcat-update-policy.sh || return 2
  do_start_cmd || return $?
}

-------------------------------------------- end of output command sysd2v-0.3.sh  tomcat9.service

Thanks to those who can help me
Alsen

But I have zero experience with sysvinit scripts so I probably won't be much help (sorry).

i have tested sysd2v to convert tomcat9.service and do not function, It create fake script with same mistake
I am not so expert on shell script to debug or update the script

Do you have another idea ?

Thanks
Alberto

I will try the conversion tools  sysd2v in case it works as I can make the script available to all of Devunaners

Alsen

You could try the sysd2v-0.3.sh conversion script, that might work: http://www.trek.eu.org/devel/sysd2v/

EDIT: they're up to v-0.3 now.

Apache Tomcat 9 - Servlet and JSP engine

Apache Tomcat implements the Java Servlet and the JavaServer Pages (JSP) specifications from Oracle, and provides a "pure Java" HTTP web server environment for Java code to run.

This package contains only the startup scripts for the system-wide daemon. No documentation or web applications are included here, please install the tomcat9-docs and tomcat9-examples packages if you want them. Install tomcat9-user instead of this package if you don't want Tomcat to start as a service
------
I not able to create the startup scripts, can you help or where I can get information on how to do it ?

Thanks
Alsen

Thanks
Alsen