Strange behavior

Hello my friends!

I was making a pretty simple script to export our databases, and found a
strange (funny) behavior of psql (or bash?).

[psql8(at)xxxx]$ psql -Atl | cut -d"|" -f1 | grep -v template
Db_1
Db_2
Db_3
Db_4

The databases name were changed due privacy reasons (our client database),
but as you can see the command worked.

Now, when I come with the bash script:

#!/bin/bash

imprime () {
echo `date +"%d/%m/%y %H:%M:%S |"` $*
}

BANCOS=`psql -Atl | cut -d"|" -f1 | grep -v template`
for BANCO in $BANCOS; do
imprime "Inicio do backup da base $BANCO"
done

[psql8(at)webix backup_psql8]$ ./backup.sh
psql: could not send startup packet: Broken pipe

Any clues????

Best Regards,
Bruno Almeida do Lago