MobileRead Forums - View Single Post - PW4 Using bluetooth to listen to non-amazon audiobook

NiLuJe · 04-30-2020, 12:03 PM

Don't put a full pipeline in a variable, that won't work.

Code:

~ $ cmdline="ls -lash /var/tmp | sort -u"
~ $ $cmdline
ls: |: No such file or directory
ls: sort: No such file or directory

Quoting means what it says on the tiin: it'll quote metacharacters, and pass them as *arguments*. Word-splitting may also be an issue in some cases.

i.e., this actually ends up running something along the lines of ls -lash /var/tmp "|" sort -u

04-30-2020, 12:03 PM	#88
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Don't put a full pipeline in a variable, that won't work. Code: ~ $ cmdline="ls -lash /var/tmp \| sort -u" ~ $ $cmdline ls: \|: No such file or directory ls: sort: No such file or directory Quoting means what it says on the tiin: it'll quote metacharacters, and pass them as arguments. Word-splitting may also be an issue in some cases. i.e., this actually ends up running something along the lines of ls -lash /var/tmp "\|" sort -u Last edited by NiLuJe; 04-30-2020 at 12:08 PM.