Se uso virgolette singole per racchiudere l'istruzione action di awk, funziona come previsto: $ dpkg -l | grep "linux\-[a-z]*\-" | awk {'print $2'} linux-headers-3.13.0-27 linux-headers-3.13.0-27-generic linux-headers-3.14.4-031404 linux-headers-3.14.4-031404-generic linux-headers-generic linux-image-3.13.0-27-generic linux-image-3.14.4-031404-generic linux-image-extra-3.13.0-27-generic linux-image-generic linux-libc-dev:i386 linux-sound-base Ma se uso le virgolette doppie per racchiuderle, stampa l'intera riga anziché la colonna / campo …
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