atop parsing its logfiles. # Cuts off partway through: zcat atop.log.gz | atop -r /dev/stdin | less # Works fine: zcat atop.log.gz > atop && atop -r at

atop parsing its logfiles. # Cuts off partway through: zcat atop.log.gz | atop -r /dev/stdin | less # Works fine: zcat atop.log.gz > atop && atop -r atop | less That said, I agree with your experience that /dev/stdin usually works for programs that read a file straight in.