hi, this is recurring cd story:
https://lists.gnu.org/archive/html/bug-bash/2016-04/msg00038.html pg On 14 Sep 2016, at 12:01, idal...@home.idallen.ca wrote: > Configuration Information [Automatically generated, do not change]: > Machine: x86_64 > OS: linux-gnu > Compiler: gcc > Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' > -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu' > -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL > -DHAVE_CONFIG_H -I. -I../. -I.././include -I.././lib -Wdate-time > -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong -Wformat > -Werror=format-security -Wall > uname output: Linux idallen-oak 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 > 18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux > Machine Type: x86_64-pc-linux-gnu > > Bash Version: 4.3 > Patch Level: 46 > Release Status: release > > Description: > Many built-in commands ignore trailing garbage instead of giving > a syntax error, and this leads newbies into making dumb mistakes > that they think work fine because of no error message, e.g.: > > $ umask 0777 myfile # should have been chmod > $ cd /usr /bin # goes to /usr not to intended /usr/bin > > Commands should never ignore user input. If it's there, someone > thinks it should be used. Use it or please give error messages. > > Repeat-By: > $ cd /bin this trailing garbage is ignored but should give an error > > $ pushd /bin this trailing garbage is ignored but should give an error > > $ umask 022 this trailing garbage is ignored but should give an error > > $ help help this trailing garbage is ignored but should give an error > > etc. > > Fix: > Make built-in commands give error messages if given too many arguments. >
