On Mon Feb 13, 2023 at 10:00 AM CET, David Laight wrote: > From: Vladimír Macek > > Sent: 11 February 2023 19:15 > > > > Hi, > > > > I'd like to report what seems to be a bug in the busybox's test command. I > > use the official alpine:3 docker container. > > > > The test -r does not return true even when the file is indeed readable > > (testing by head command). Yes, the file has an unusual set of permissions, > > but that does not restrict it from reading. Here's the output of the > > interactive container shell session: > > > > dd72078df6d2:/task/output/files$ ls -lad . .. cnb_rate_eur_czk.csv > > drwxrwx--- 2 setup project 4096 Feb 11 18:33 . > > drwxr-x--- 5 setup project 4096 Feb 11 18:33 .. > > -rw-r--r-- 1 task project 20512 Feb 11 18:33 > > cnb_rate_eur_czk.csv > > By the look of it the problem is that 'test -r' requires > directory search access - so why not just say that. > > > dd72078df6d2:/task/output/files$ [ -r cnb_rate_eur_czk.csv ] && echo > > READABLE > > dd72078df6d2:/task/output/files$ [[ -r cnb_rate_eur_czk.csv ]] && echo > > READABLE > > > > dd72078df6d2:/task/output/files$ which [ > > /usr/bin/[ > > dd72078df6d2:/task/output/files$ which [[ > > /usr/bin/[[ > > The output from 'which' doesn't necessarily have any connection > with the code any specific shell executes for a command. > 'which' is a bourne shell script that is trying (and must fail) to > emulate a csh builtin command. > > The 'test/[' command is almost certainly a shell builtin. > The program in /usr/bin is almost never executed.
when one is using busybox ash as a shell, is /usr/bin/test (from busybox symlink) and "builtin test" not the same code in the end (same for [)? i.e. this case, which is probably using busybox ash (needs confirmation). > As for '[[', IIRC that is a bash 'special' that nothing > portable should be using. > > David > > - > Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 > 1PT, UK > Registration No: 1397386 (Wales) > _______________________________________________ > busybox mailing list > [email protected] > http://lists.busybox.net/mailman/listinfo/busybox _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
