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Josep Giner
Asked: 2021-12-24 23:55:51 +0800 CST 2021-12-24 23:55:51 +0800 CST

When I send mail by bash script nothing appears in the message body

  • 772

I have a problem and it is that when I send a content via bash script , when I receive it by mail nothing comes out and I don't understand what is happening. If someone can help me I would appreciate it very much.

Greetings.

#!/bin/bash

while read line
do
    echo $line
    ping -c 5 $line > /dev/null 2>&1

    if [ $? -eq 0 ]
    then
        echo "Hay conexion"
    else
        echo "KO:" $line > enviar.txt
    fi
done < ip2.txt
ssmtp correo a enviar < enviar.txt
bash

1 Answers

  1. Best Answer

    This is an assumption, but from the script it would say that all the ips you have in ip2.txtwork and that's why you don't have anything in the message.

    Note that you only save to enviar.txtwhen an ip fails. Another thing I've noticed is that if 2 ip's fail you will only get KO'd from one of them.

    >replace the file while >>adding.

    Finally if there is no line break in the last ip it will not be read.

    #!/bin/bash

# Eliminamos el fichero de la ejecución anterior
rm -f enviar.txt

# Nos aseguramos de leer la última linea
while IFS="" read -r line || [ -n "$line" ]
do
  echo $line
  ping -c 5 $line >/dev/null 2>&1

  if [ $? -eq 0 ]
  then
    # Agregamos el ok al fichero, esto quizá no quieras hacerlo pero no estaba seguro...
    echo "Hay conexion: $line" >> enviar.txt
  else
    # Agregamos el KO
    echo "KO:"$line >> enviar.txt
  fi 
done < ip2.txt

# Enviamos si el fichero existe. Útil si solo guardamos los KO's así solo recibiras el email cuando algo falle
if [ -f enviar.txt ]; then
  ssmtp correo a enviar < enviar.txt
fi
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