Re: Use of pipe in $( filename | program) returns null
Am 28.11.2009 06:35, schrieb r...@saturn.syslang.net: Description: use of $( filename | program) does not work. It either should or it should be properly documented. The problem also happens on bash4. Repeat-By: qq=$( /etc/passwd | grep sys) echo $qq # result is null Fix: Either fix the docs to tell people that a pipe is not allowed or fix the code to allow it. The problem is not the pipe but the fact that 'filename' is an empty command which does nothing. If you want 'program' to read from 'file', use 'programfile'. Bernd -- Bernd Eggink http://sudrala.de
Re: Use of pipe in $( filename | program) returns null
Bernd Eggink mono...@sudrala.de writes: Am 28.11.2009 06:35, schrieb r...@saturn.syslang.net: Description: use of $( filename | program) does not work. It either should or it should be properly documented. The problem also happens on bash4. Repeat-By: qq=$( /etc/passwd | grep sys) echo $qq # result is null Fix: Either fix the docs to tell people that a pipe is not allowed or fix the code to allow it. The problem is not the pipe but the fact that 'filename' is an empty command which does nothing. If you want 'program' to read from 'file', use programfile'. Or even $( /etc/passwd grep sys). Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different.
PROMPT_DIRTRIM skips depth n-1 when ~ is n
Configuration Information [Automatically generated, do not change]:Machine: i486OS: linux-gnuCompiler: gccCompilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' -DCONF_OSTYPE='lin$uname output: Linux emperor 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:2$Machine Type: i486-pc-linux-gnu Bash Version: 4.0Patch Level: 33Release Status: release Description: If you are in a directory below ~ and you set PROMPT_DIRTRIM to the depthminus 2 it includes the depth minus 1 directory in the prompt as well. Repeat-By: $ mkdir -p /tmp/seven/six/five/four/three/two/one$ cd /tmp/seven/six/five/four/three/two/one$ PS1=\w$ /tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0/tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1.../one$ PROMPT_DIRTRIM=2.../two/one$ PROMPT_DIRTRIM=3.../three/two/one$ PROMPT_DIRTRIM=4.../four/three/two/one$ PROMPT_DIRTRIM=5.../five/four/three/two/one$ PROMPT_DIRTRIM=6.../six/five/four/three/two/one$ PROMPT_DIRTRIM=7.../seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=8/tmp/seven/six/five/four/three/two/one$ cd ~~$ mkdir -p ~/seven/six/five/four/three/two/one~$ cd ~/seven/six/five/four/three/two/one~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1~/.../one$ PROMPT_DIRTRIM=2~/.../two/one$ PROMPT_DIRTRIM=3~/.../three/two/one$ PROMPT_DIRTRIM=4~/.../four/three/two/one$ PROMPT_DIRTRIM=5~/.../five/four/three/two/one$ PROMPT_DIRTRIM=6~/seven/six/five/four/three/two/one$ Repeated here without the prompts: mkdir -p /tmp/seven/six/five/four/three/two/onecd /tmp/seven/six/five/four/three/two/onePS1=\w$ PROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_DIRTRIM=2PROMPT_DIRTRIM=3PROMPT_DIRT RIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6PROMPT_DIRTRIM=7PROMPT_DIRTRIM=8cd ~mkdir -p ~/seven/six/five/four/three/two/onecd ~/seven/six/five/four/three/two/onePROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_DI RTRIM=2PROMPT_DIRTRIM=3PROMPT_DIRTRIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6
( error
$ hd (echo -en \\0{0..3}{0..7}{0..7})
it breaks the console.
Re: ESC SPC please
On Sat, 28 Nov 2009, jida...@jidanni.org wrote: Please implement emacs' M-SPC (translated from escape SPC) runs the command just-one-space, which is an interactive compiled Lisp function in `simple.el'. I mean you already implement M-\ (translated from escape \) runs the command delete-horizontal-space, which is an interactive compiled Lisp function in `simple.el'. Sorry I make this request every two years. maybe try the following macro: bind '\M- :\M-\\ '
Re: ( error
On Sat, 28 Nov 2009, Antonio Macchi wrote:
$ hd (echo -en \\0{0..3}{0..7}{0..7})
it breaks the console.
The behaviour of bash with this construct
has changed between 3.x and 4.x so maybe indicate the version
you are using (or just use bug-bash)
Also perhaps indicate what you want to achieve (I don't have an
hd command, and didn't find a man page after a quick search)
and give a more precise description of breaks the console
Re: ( error
Also perhaps indicate what you want to achieve (I don't have an hd command, and didn't find a man page after a quick search) sorry.. i'll be more precise in future... but, if you don't have hd (hexdump) how can you see the content of a, for example, strange file i mean $ ls -l total 0 -rw-r--r-- 1 user1 user1 0 2009-11-28 14:56 ? $ hd (ls) 09 0a |..| 0002 $ rm $'\x09' $ ls -l total 0 do you know another way to do it?
Re: ( error
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 According to Antonio Macchi on 11/28/2009 6:57 AM: but, if you don't have hd (hexdump) how can you see the content of a, POSIX requires the existence of od, and od can be used to emulate hexdump. You are very unlikely to find a system that lacks od. - -- Don't work too hard, make some time for fun as well! Eric Blake e...@byu.net -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAksRLgQACgkQ84KuGfSFAYCllACgmXmsY/NSw10lNQp8kMwKfzA2 yP0AoIs97ThyBmAPxe20sQyhUcKCaRyx =I0T9 -END PGP SIGNATURE-
Re: ( error
Antonio Macchi schrieb:
$ hd (echo -en \\0{0..3}{0..7}{0..7})
it breaks the console.
It doesn't break the console, it crashes the shell (here with a
subshell to get the text):
bon...@core:~$ bash
bon...@core:~$ hd (echo -en \\0{0..3}{0..7}{0..7})
malloc: ../bash/subst.c:4198: assertion botched
realloc: start and end chunk sizes differ
last command: hd (echo -en \\0{0..3}{0..7}{0..7})
Aborting...Abgebrochen (core dumped)
Re: Use of pipe in $( filename | program) returns null
On Nov 28, 4:46 am, Andreas Schwab sch...@linux-m68k.org wrote: Bernd Eggink mono...@sudrala.de writes: Am 28.11.2009 06:35, schrieb r...@saturn.syslang.net: Description: use of $( filename | program) does not work. It either should or it should be properly documented. The problem also happens on bash4. Repeat-By: qq=$( /etc/passwd | grep sys) echo $qq # result is null Fix: Either fix the docs to tell people that a pipe is not allowed or fix the code to allow it. The problem is not the pipe but the fact that 'filename' is an empty command which does nothing. If you want 'program' to read from 'file', use programfile'. Or even $( /etc/passwd grep sys). Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different. Or even $(grep sys /etc/passwd)
Re: Cannot build statically linked, working bash
tho...@koeller.dyndns.org wrote: Description: I failed at building a statically linked, working bash. First of all, the only way to build is by giving the '--with-bash-malloc=no' argument to configure, because otherwise the linker will complain about multiple definitions of 'malloc' and 'free', which of course are present in libc. Even so, the binary resulting from the build will crash during startup, inside the getpwuid() function. I found a mail thread that describes a similar problem for bash-3.2 on Solaris http://lists.gnu.org/archive/html/bug-bash/2008-10/msg00011.html. Like the reporter, I configured my system to use LDAP for authentication. Only if I run bash as the root user, which is a local account outside the ldap directory, there is no crash and it appears to work. It's the same problem. There are portions of the Linux C library that cannot be used by a statically-linked program. The best you can do is to link those portions dynamically and the remainder statically. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRUc...@case.eduhttp://cnswww.cns.cwru.edu/~chet/
Re: Use of pipe in $( filename | program) returns null
r...@saturn.syslang.net wrote: Description: use of $( filename | program) does not work. It either should or it should be properly documented. The problem also happens on bash4. Repeat-By: qq=$( /etc/passwd | grep sys) echo $qq # result is null Fix: Either fix the docs to tell people that a pipe is not allowed or fix the code to allow it. That construct is very limited. As the bash man page says: The command substitution $(cat file) can be replaced by the equivalent but faster $( file). That seems pretty clear. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRUc...@case.eduhttp://cnswww.cns.cwru.edu/~chet/
Re: ( error
Antonio Macchi wrote:
$ hd (echo -en \\0{0..3}{0..7}{0..7})
it breaks the console.
This was a bug in bash-3.2; fixed in bash-4.0. You hit it when you
get close to exceeding the max number of open file descriptors using
the /dev/fd version of process substitution.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRUc...@case.eduhttp://cnswww.cns.cwru.edu/~chet/
Re: ESC SPC please
PG maybe try the following macro: PG bind '\M- :\M-\\ ' Sorry, that doesn't work on the command line or .inputrc. No effect.
Re: PROMPT_DIRTRIM skips depth n-1 when ~ is n
On Nov 28, 5:25 am, dennis den...@netstrata.com wrote: Configuration Information [Automatically generated, do not change]:Machine: i486OS: linux-gnuCompiler: gccCompilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' -DCONF_OSTYPE='lin$uname output: Linux emperor 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:2$Machine Type: i486-pc-linux-gnu Bash Version: 4.0Patch Level: 33Release Status: release Description: If you are in a directory below ~ and you set PROMPT_DIRTRIM to the depthminus 2 it includes the depth minus 1 directory in the prompt as well. Repeat-By: $ mkdir -p /tmp/seven/six/five/four/three/two/one$ cd /tmp/seven/six/five/four/three/two/one$ PS1=\w$ /tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0/tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1.../one$ PROMPT_DIRTRIM=2.../two/one$ PROMPT_DIRTRIM=3.../three/two/one$ PROMPT_DIRTRIM=4.../four/three/two/one$ PROMPT_DIRTRIM=5.../five/four/three/two/one$ PROMPT_DIRTRIM=6.../six/five/four/three/two/one$ PROMPT_DIRTRIM=7.../seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=8/tmp/seven/six/five/four/three/two/one$ cd ~~$ mkdir -p ~/seven/six/five/four/three/two/one~$ cd ~/seven/six/five/four/three/two/one~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1~/.../one$ PROMPT_DIRTRIM=2~/.../two/one$ PROMPT_DIRTRIM=3~/.../three/two/one$ PROMPT_DIRTRIM=4~/.../four/three/two/one$ PROMPT_DIRTRIM=5~/.../five/four/three/two/one$ PROMPT_DIRTRIM=6~/seven/six/five/four/three/two/one$ Repeated here without the prompts: mkdir -p /tmp/seven/six/five/four/three/two/onecd /tmp/seven/six/five/four/three/two/onePS1=\w$ PROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_DIRTRIM=2PROMPT_DIRTRIM=3PROMPT_DIR T RIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6PROMPT_DIRTRIM=7PROMPT_DIRTRIM=8cd ~mkdir -p ~/seven/six/five/four/three/two/onecd ~/seven/six/five/four/three/two/onePROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_D I RTRIM=2PROMPT_DIRTRIM=3PROMPT_DIRTRIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6 Once again, something - probably Linux vs. Windows line endings - screwed up my post. Here it is straightened out. Hopefully. Configuration Information [Automatically generated, do not change]: Machine: i486 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' - DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' - DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' - DSHELL -DHAVE_CONFIG_H -I. -I../bash -I../bash/include -I../bash/ lib -g -O2 -Wall uname output: Linux emperor 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux Machine Type: i486-pc-linux-gnu Bash Version: 4.0 Patch Level: 33 Release Status: release Description: If you are in a directory below ~ and you set PROMPT_DIRTRIM to the depth minus 2 it includes the depth minus 1 directory in the prompt as well. Repeat-By: $ mkdir -p /tmp/seven/six/five/four/three/two/one $ cd /tmp/seven/six/five/four/three/two/one $ PS1=\w$ /tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0 /tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1 .../one$ PROMPT_DIRTRIM=2 .../two/one$ PROMPT_DIRTRIM=3 .../three/two/one$ PROMPT_DIRTRIM=4 .../four/three/two/one$ PROMPT_DIRTRIM=5 .../five/four/three/two/one$ PROMPT_DIRTRIM=6 .../six/five/four/three/two/one$ PROMPT_DIRTRIM=7 .../seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=8 /tmp/seven/six/five/four/three/two/one$ cd ~ ~$ mkdir -p ~/seven/six/five/four/three/two/one ~$ cd ~/seven/six/five/four/three/two/one ~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0 ~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1 ~/.../one$ PROMPT_DIRTRIM=2 ~/.../two/one$ PROMPT_DIRTRIM=3 ~/.../three/two/one$ PROMPT_DIRTRIM=4 ~/.../four/three/two/one$ PROMPT_DIRTRIM=5 ~/.../five/four/three/two/one$ PROMPT_DIRTRIM=6 ~/seven/six/five/four/three/two/one$ Without the prompts: mkdir -p /tmp/seven/six/five/four/three/two/one cd /tmp/seven/six/five/four/three/two/one PS1=\w$ PROMPT_DIRTRIM=0 PROMPT_DIRTRIM=1 PROMPT_DIRTRIM=2 PROMPT_DIRTRIM=3 PROMPT_DIRTRIM=4 PROMPT_DIRTRIM=5 PROMPT_DIRTRIM=6 PROMPT_DIRTRIM=7 PROMPT_DIRTRIM=8 cd ~ mkdir -p ~/seven/six/five/four/three/two/one cd ~/seven/six/five/four/three/two/one PROMPT_DIRTRIM=0 PROMPT_DIRTRIM=1 PROMPT_DIRTRIM=2 PROMPT_DIRTRIM=3 PROMPT_DIRTRIM=4 PROMPT_DIRTRIM=5 PROMPT_DIRTRIM=6
Re: Use of pipe in $( filename | program) returns null
Chet Ramey wrote: r...@saturn.syslang.net wrote: Description: use of $( filename | program) does not work. It either should or it should be properly documented. The problem also happens on bash4. Repeat-By: qq=$( /etc/passwd | grep sys) echo $qq # result is null Fix: Either fix the docs to tell people that a pipe is not allowed or fix the code to allow it. That construct is very limited. As the bash man page says: The command substitution $(cat file) can be replaced by the equivalent but faster $( file). That seems pretty clear. Yeah, and then based on that he probably thought that $(cat file | grep sys) could be replaced by $( file | grep sys) which is not the case.
Re: PROMPT_DIRTRIM skips depth n-1 when ~ is n
DennisW wrote: On Nov 28, 5:25 am, dennis den...@netstrata.com wrote: Configuration Information [Automatically generated, do not change]:Machine: i486OS: linux-gnuCompiler: gccCompilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' -DCONF_OSTYPE='lin$uname output: Linux emperor 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:2$Machine Type: i486-pc-linux-gnu Bash Version: 4.0Patch Level: 33Release Status: release Description: If you are in a directory below ~ and you set PROMPT_DIRTRIM to the depthminus 2 it includes the depth minus 1 directory in the prompt as well. Repeat-By: $ mkdir -p /tmp/seven/six/five/four/three/two/one$ cd /tmp/seven/six/five/four/three/two/one$ PS1=\w$ /tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0/tmp/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1.../one$ PROMPT_DIRTRIM=2.../two/one$ PROMPT_DIRTRIM=3.../three/two/one$ PROMPT_DIRTRIM=4.../four/three/two/one$ PROMPT_DIRTRIM=5.../five/four/three/two/one$ PROMPT_DIRTRIM=6.../six/five/four/three/two/one$ PROMPT_DIRTRIM=7.../seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=8/tmp/seven/six/five/four/three/two/one$ cd ~~$ mkdir -p ~/seven/six/five/four/three/two/one~$ cd ~/seven/six/five/four/three/two/one~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=0~/seven/six/five/four/three/two/one$ PROMPT_DIRTRIM=1~/.../one$ PROMPT_DIRTRIM=2~/.../two/one$ PROMPT_DIRTRIM=3~/.../three/two/one$ PROMPT_DIRTRIM=4~/.../four/three/two/one$ PROMPT_DIRTRIM=5~/.../five/four/three/two/one$ PROMPT_DIRTRIM=6~/seven/six/five/four/three/two/one$ Repeated here without the prompts: mkdir -p /tmp/seven/six/five/four/three/two/onecd /tmp/seven/six/five/four/three/two/onePS1=\w$ PROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_DIRTRIM=2PROMPT_DIRTRIM=3PROMPT_DIR T RIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6PROMPT_DIRTRIM=7PROMPT_DIRTRIM=8cd ~mkdir -p ~/seven/six/five/four/three/two/onecd ~/seven/six/five/four/three/two/onePROMPT_DIRTRIM=0PROMPT_DIRTRIM=1PROMPT_D I RTRIM=2PROMPT_DIRTRIM=3PROMPT_DIRTRIM=4PROMPT_DIRTRIM=5PROMPT_DIRTRIM=6 Once again, something - probably Linux vs. Windows line endings - screwed up my post. Here it is straightened out. Hopefully. Configuration Information [Automatically generated, do not change]: Machine: i486 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' - DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' - DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' - DSHELL -DHAVE_CONFIG_H -I. -I../bash -I../bash/include -I../bash/ lib -g -O2 -Wall uname output: Linux emperor 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux Machine Type: i486-pc-linux-gnu Bash Version: 4.0 Patch Level: 33 Release Status: release Description: If you are in a directory below ~ and you set PROMPT_DIRTRIM to the depth minus 2 it includes the depth minus 1 directory in the prompt as well. Thanks for the report. This will be fixed in bash-4.1. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRUc...@case.eduhttp://cnswww.cns.cwru.edu/~chet/
