On Wed, Jan 09, 2019 at 10:31:46AM -0500, Jude DaShiell wrote: > On Wed, 9 Jan 2019, Jochen Spieker wrote: > > > Date: Wed, 9 Jan 2019 10:17:50 > > From: Jochen Spieker <m...@well-adjusted.de> > > To: debian-user@lists.debian.org > > Subject: Re: taming lsblk command > > > > Jude DaShiell: > > > what works over here: > > > lsblk -n < /usr/bin/sort > > > > This command feeds the content of the file /usr/bin/sort into stdin of > > lsblk. That does not make sense and I guess lsblk is just ignoring this > > input. > > > > J. > > > Script started on Wed 09 Jan 2019 10:30:00 AM EST > jude[~]$ lsblk -n < /usr/bin/sort > sda 8:0 0 111.8G 0 disk > ??????sda1 8:1 0 111.8G 0 part / > ??????sda2 8:2 0 32.5M 0 part [SWAP] > sdb 8:16 0 55.9G 0 disk > ??????sdb1 8:17 0 55G 0 part > sr0 11:0 1 1024M 0 rom > jude[~]$ exit > exit > > Script done on Wed 09 Jan 2019 10:30:50 AM EST
Still, I agree with Jochen here. Lsblk just ignores its standard input (lucky you! -- who knows what lurking bugs this unexpected input might tickle!). Your command would do just the same without the < /usr/bin/sort. With lsblk -n < /usr/bin/sort you are feeding the contents of the /usr/bin/sort binary program to lsblk's standard input. Rather do: lsblk <options> | /usr/bin/sort <options> or, typically: lsblk <options> | sort <options> since /usr/bin *is* in your PATH (is it not? Complain to your sysadmin) or (attention, bashism ahead!): sort <(lsblk) (whitespaces matter here!), which will only work if your shell is bash, but is the next resemblance to your command line above I could come up with. Cheers -- tomás
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