02-12-2009
In my relentless pursuit of programming perfection, and in answer to my question above, I have discovered that the following code does what I am trying to do in the Cshell:
set pds_files = `find . -name "*.[Pp][Dd][Ss]" -print`
if ("$pds_files" != "") then
...
else
...
endif
This works regardless of the presence or absence of any .pds (or .PDS) files. It does seem, however, that I had tried this code previously in my many various permutations of it. One thing I did differently this time, however, was add empty lines separating parts of my code. Is there any conceivable way that adding empty lines can have such an effect?
While I can appreciate that the Cshell is not the best environment for programming, the thought of converting everything over to the Bourne shell makes me go queasy. I appreciate the input re: various sources of help with cshell programming.
Thanks,
Paul H.
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head(1) General Commands Manual head(1)
NAME
head - give first few lines
SYNOPSIS
count] [file ...]
Obsolescent:
[file ...]
DESCRIPTION
prints on standard output the first count lines of each of the specified files, or of the standard input. If count is omitted it defaults
to 10.
If multiple files are specified, outputs before each file a line of this form:
file
Options
The quantity of output is measured in bytes.
The number of units of output.
This option is provided for backward compatibility (see below) and is mutually exclusive of all other options.
The quantity of output is measured in lines; this is the default.
The number of lines (default) or bytes output.
count is an unsigned decimal integer. If (or is not given, the default quantity is 10. This option provides the same func-
tionality as the option, but in a more standard way. Use of the option is recommended where portability between systems is
important.
EXTERNAL INFLUENCES
Environment Variables
determines the interpretation of text within file as single and/or multi-byte characters.
determines the language in which messages are displayed.
If or is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty
variable. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of
If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See
environ(5).
International Code Set Support
Single- and multi-byte character code sets are supported.
WARNINGS
The length of the input lines is limited to bytes.
SEE ALSO
tail(1), cat(1), more(1), pg(1).
STANDARDS CONFORMANCE
head(1)