#!/bin/bash
set -ex
THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )

adduser \
   --disabled-password \
   --home /home/ssh \
   ssh

insert_if_not_exist()
{
    filename=$1
    line=$2
    if [ ! -f "$filename" ]; then
        touch $filename
    fi
    grep -qxF -- "$line" "$filename" || echo "$line" >> "$filename"
}

insert_if_not_exist "/etc/crontab" "*/5 0 0 0 0 cd \"$THIS_DIR\" && git pull && \"$THIS_DIR\"/jumpserver_cron.sh"