Shell scripts automatically generate crontab

1. Sometimes operation and maintenance requirements automatically generated  Cronab  task scheduling, the implementation of the corresponding service name management;  #!/bin/bash#athor check crontab crontab_ Add () {cron_path= "$" cat >/etc/cron.d/$cron _path<<eof# run service application       */5 * * * * root  /chj/app/$cron _path/ bin/console start eof}check_crontab  () {     app_name= "$"            if [ ! -f  /etc/cron.d/$app _name  ]           then           crontab_add   "$"                               else          echo  "file already  Exists "     fi      } if [   "$"  ==  " ]then      echo -e  "\033[41;37m  no parameters, cannot allow program execution, has stopped  \033[0m"      exit 1     else    check_crontab  "$"      echo -e  "\033[32m crontab  has started writing  \033[0m"  fi

Shell scripts automatically generate crontab