08-29-2009
Similar background, but I may have 10 years head start largely due to time spent on VME and VMS.
Omg! Minix (nostalgic moment).
Remember OS/9 (not the MAC one)?
Notwithstanding our combined experience we will both have seen anomalous behaviour in Operating Systems.
I cannot believe that I am the only person to have encountered problems with unix commands dealing with space characters in filenames.
The question still remains: Why have I seen the "{}" problem before?
I am exploring Reborg's ideas which imply that some older shells were eating the {}. If proven, this would explain it. I don't have access to the source code to the various editions of "find" - unlike when I was working on enhancements to RSX.
Sorry Reborg, my example was pedantic and addressed to those who quote the POSIX definition of the expected behaviour of a command rather than to those of us who know how the command behaves in a shell enviroment if we use that command correctly.
As we all know from the roots of unix, if all else fails and the command does not do what you want - write your own.
Btw. jlliagre is cool and I am enjoying this debate.
Last edited by methyl; 08-29-2009 at 07:44 PM..
Reason: Remove "post updated" because it looks awful
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NAME
sh - overview of various system shells
SYNOPSIS
POSIX Shell
option] ... string] [arg ...]
option] ... string] [arg ...]
Korn Shell
option] ... string] [arg ...]
option] ... string] [arg ...]
C Shell
[command_file] [argument_list ...]
Key Shell
DESCRIPTION
Remarks
The POSIX .2 standard requires that, on a POSIX-compliant system, executing the command activates the POSIX shell (located in file on HP-UX
systems), and executing the command produces an on-line manual entry that displays the syntax of the POSIX shell command-line.
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detail.
The Bourne shell is removed from the system starting with HP-UX 11i Version 1.5. Please use the POSIX shell as an alternative.
Shell Descriptions
The HP-UX operating system supports the following shells:
POSIX-conforming command programming language and command interpreter
residing in file Can execute commands read from a terminal or a file. This shell conforms to current POSIX standards in
effect at the time the HP-UX system release was introduced, and is similar to the Korn shell in many respects. Similar in
many respects to the Korn shell, the POSIX shell contains a history mechanism, supports job control, and provides various
other useful features.
Korn-shell command programming language and commands interpreter
residing in file Can execute commands read from a terminal or a file. This shell, like the POSIX shell, contains a his-
tory mechanism, supports job control, and provides various other useful features.
A command language interpreter
that incorporates a command history buffer, C-language-like syntax, and job control facilities.
Restricted version of the POSIX shell command interpreter.
Sets up a login name and execution environment whose capabilities are more controlled (restricted) than normal user
shells.
restricted version of the Korn-shell command interpreter
Sets up a login name and execution environment whose capabilities are more controlled (restricted) than normal user
shells.
An extension of the standard Korn Shell
that uses hierarchical softkey menus and context-sensitive help.
+--------------+--------------------+
| To obtain: | Use the command: |
+--------------+--------------------+
| POSIX Shell | /usr/bin/sh ... |
| Korn Shell | /usr/bin/ksh ... |
| C Shell | /usr/bin/csh ... |
| Key Shell | /usr/bin/keysh |
+--------------+--------------------+
These shells can also be the default invocation, depending on the entry in the file. See also chsh(1).
WARNINGS
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SEE ALSO
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keysh(1) Key Shell description.
ksh(1) Korn Shell description.
sh-posix(1) POSIX Shell description.
csh(1) C Shell description.
sh(1)