Busindre

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===== Agregar fecha y hora a cada linea resultante de la ejecución de un comando en GNU/Linux=====


**Usando Perl**.
<code bash>
ping 8.8.8.8 | perl -nle 'print scalar(localtime), " ", $_'
Tue Sep 18 16:17:22 2018 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
Tue Sep 18 16:17:22 2018 64 bytes from 8.8.8.8: icmp_seq=1 ttl=121 time=2.87 ms
Tue Sep 18 16:17:23 2018 64 bytes from 8.8.8.8: icmp_seq=2 ttl=121 time=2.85 ms
</code>

**Usando Perl y redireccionando a un fichero (/tmp/file)**.
<code bash>ping 8.8.8.8 | perl -nle '$|++;print scalar(localtime), " ", $_' > /tmp/file</code>

**Comando ts** (moreutils).
<code bash>ping 8.8.8.8 | ts
sep 18 16:08:41 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
sep 18 16:08:41 64 bytes from 8.8.8.8: icmp_seq=1 ttl=121 time=3.02 ms
sep 18 16:08:42 64 bytes from 8.8.8.8: icmp_seq=2 ttl=121 time=2.85 ms

# Redireccionar a fichero no necesita nada especial.
ping 8.8.8.8 | ts > /tmp/file
</code>