02-18-2011
I know that, the sample of code I posted was copied from the interactive command-line, hence single-% denoted variables. I've been reading the help file for "for /?" and it's pretty worthless and borderline esoteric!
I'm not certain whether my DEVE is working correctly.
Thanks for your suggestion though.
---------- Post updated at 08:04 PM ---------- Previous update was at 06:53 PM ----------
I'm not sure what worked so differently for me this time, but I was able to successfully execute the code above as intended using the following syntax. This is for your reference.
at the interactive command-line, you'll use single-%-denoted iteration variables, but in a batch script, you'll use double-%-denoted variables for the iteration statements/command sets. I'll demonstrate batch-script form, italicized commentary is FYI, the bold-print characters are the actual script commands.
SETLOCAL ENABLEDELAYEDEXPANSION
this line turns on delayed environment variable expansion, necessary to store and expand variables set within the for loop. Otherwise, variable values are expanded as the command is parsed (before execution)
for /f "usebackq" %%A in (`dir /b C:\directory\`) do (
this first line is using %%A as the iterator variable, storing each line of output from dir /b (the b option is equivalent to ls -1 in UNIX)
set origname=%%A
stores the value of %%A into a variable (origname) that can be manipulated later in the loop iteration
set eighth=!origname:~7,1!
this stores the eighth character of origname variable, the variable must now be expanded using exclamation points for flags instead of percent-symbols. But is still subject to all the rules of regullar command-shell variables, including string manipulation.
if !eighth!==3 (
begin if condition
move /Y C:\directory\!origname! C:\directory\output\!origname:~0,7!5!origname:~8,6!
based on result of if comparison, moves original file to a parsing directory for a program that uses 8th character to process based on a rule set, as you can (or cannot) tell--the original filename is expected to be a 14-character string and we're modifying the 8th character to conform to a ruleset for processing) else (
move /Y C:\directory\!origname! C:\directory\output\!origname:~0,7!3!origname:~8,6!
)
)
The else condition is a coverall for files that do conform to a ruleset but erred for one reason or another and thus processes them using a different ruleset.
Hopefully this makes sense to you. Initially, when the command-line was expanding the variables, it was printing some funky stuff. It seemed to just start working, but who knows--I've been staring at this damm screen so long.
ProGrammar
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LEARN ABOUT SUNOS
readonly
readonly(1) User Commands readonly(1)
NAME
readonly - shell built-in function to protect the value of the given variable from reassignment
SYNOPSIS
sh
readonly [name...]
ksh
**readonly [ name [ = value]...]
**readonly -p
DESCRIPTION
sh
The given names are marked readonly and the values of the these names may not be changed by subsequent assignment. If no arguments are
given, a list of all readonly names is printed.
ksh
The given names are marked readonly and these names cannot be changed by subsequent assignment.
When -p is specified, readonly writes to the standard output the names and values of all read-only variables, in the following format:
"readonly %s=%s
", name, value
if name is set, and:
"readonly $s
", name
if name is unset.
The shell formats the output, including the proper use of quoting, so that it is suitable for reinput to the shell as commands that achieve
the same value and readonly attribute-setting results in a shell execution environment in which:
1. Variables with values set at the time they were output do not have the readonly attribute set.
2. Variables that were unset at the time they were output do not have a value at the time at which the saved output is reinput to the
shell.
On this man page, ksh(1) commands that are preceded by one or two ** (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
ksh(1), sh(1), typeset(1), attributes(5)
SunOS 5.10 17 Jul 2002 readonly(1)