Get Record count of EBCDIC file
in [Shell]
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From: sri on 28 Jun 2010 09:58 Hi all, How can I get Record count of a EBCDIC file. I wanted to know the number of records present in a EBCDIC file. I am using HP UNIX. TIA, Sri
From: Ben Bacarisse on 28 Jun 2010 12:21 sri <srilaxmipeddapally(a)gmail.com> writes: > How can I get Record count of a EBCDIC file. I wanted to know the > number of records present in a EBCDIC file. > I am using HP UNIX. EBCDIC is a character encoding. An EBCDIC file might have a record structure unrelated to the encoding -- the most likely being fixed-size records but no doubt there are others I have never seen. In other words, it is probably not possible to answer the question reliably without knowing what a record is, and once you know that you can probably answer the question yourself! -- Ben.
From: Lew Pitcher on 28 Jun 2010 12:45 On June 28, 2010 09:58, in comp.unix.shell, srilaxmipeddapally(a)gmail.com wrote: > Hi all, > > How can I get Record count of a EBCDIC file. Ask the operations department running the mainframe that created the file. If that isn't an option, then, from the operations department running the mainframe that created the file, obtain the "logical record length" (LRECL) and "Record format" (RECFM) for the file. If the "Record Format" is "FIXED" (F) or "FIXED BLOCKED" (FB), "FIXED BLOCKED SPANNED" (FBS) or "FIXED BLOCKED with ANSI control characters" (FBA) divide the filesize by the "logical record length" to obtain the # of records in the file If the "Record Format" is "VARIABLE" (V) or "VARIABLE BLOCKED" (VB), "VARIABLE BLOCKED SPANNED" (VBS), or "VARIABLE BLOCKED with ANSI control characters" (VBA) then you will have to interpret the file in order to determine the number of records. Each record will be preceeded by two two-octet binary numbers recorded in big-endian format. The first number (the first 2 octets) will be the length of the record (including this 4-octet preamble) in octets. The second number (the third and fourth octets) will be binary zero. Read through the file, counting these preambles, and the count of the number of preambles will be the record count If the "Record Format" is "UNDEFINED" (U), then the recordlength is not determinable by outside means, and (effectively) the file size in bytes is your "# of records". > I wanted to know the number of records present in a EBCDIC file. Once the file gets to Unix, your wants may not always be satisfied. Unix has no concept of "records" (with respect to file metadata), and the only reliable way to find out /that/ sort of information is to ask the people who created the file. > I am using HP UNIX. > > TIA, > Sri -- Lew Pitcher Master Codewright & JOAT-in-training | Registered Linux User #112576 Me: http://pitcher.digitalfreehold.ca/ | Just Linux: http://justlinux.ca/ ---------- Slackware - Because I know what I'm doing. ------
From: realto on 1 Jul 2010 22:44
On Jun 28, 12:45 pm, Lew Pitcher <lpitc...(a)teksavvy.com> wrote: Brampton's Lew Pitcher is a domain thief and he was recently let go by the TDBank. Check out http://lewpitcher.ca for further details. |