Sponsored Content
Full Discussion: UNIX Pipe
Top Forums UNIX for Dummies Questions & Answers UNIX Pipe Post 86250 by akrathi on Wednesday 12th of October 2005 01:55:10 PM
Old 10-12-2005
I had an issue like this .

I have to delete few records from the file in the unix box and then load the data into the database .Precisely the records whose size is less then 250 . I think there is nothing in the sql loader which offers this . Checked when cluase etc .

What I am doing now is this : Read file and copy all the records with 250 chracters to a temp file . Then load the data from the temp file

I thougt the pipe will be useful in this case .

Thanks
Ashok
 

10 More Discussions You Might Find Interesting

1. HP-UX

Compress while wrting to a file using a unix pipe

I would like to know if the following can be done. route output from an sql select directly to a pipe and compress it at the same time. regards Albert (2 Replies)
Discussion started by: booyena1
2 Replies

2. Programming

unix pipe in C

I currently stuck on a simple program that requires unix pipe. I'm have never programmed with unix pipe before, so if anyone can point me to the right different will be greatly appreciated! I'm suppose to write a program that the parent spawns many child processes and each of the child process... (1 Reply)
Discussion started by: meh
1 Replies

3. Shell Programming and Scripting

splitting a pipe delimited file in unix

Could one of you shad some light on this: I need to split the file by determining the record count and than splitting it up into 4 files. Please note, this is not a fixed record length but rather a "|" delimited file. I am not sure as how to handle reminder/offset for the 4th file. For... (4 Replies)
Discussion started by: ddedic
4 Replies

4. UNIX for Dummies Questions & Answers

Definition for the UNIX term Pipe

Looking for examples/definition of what the term Pipe means in UNIX. Please provide answers and illustrations if possible or direction. Thanks!:) (5 Replies)
Discussion started by: dfrost126
5 Replies

5. UNIX for Advanced & Expert Users

unix command pipe

I am pretty new to UNIX. My client has a requirement where in a directory we have some files with somewhat similar name like test_XX.txt, test_XY.txt, test_XZ.txt, test_ZZ.txt, test_ZY.txt, test_ZX.txt, test_YY.txt......Out of these files few files have 0 bytes. Is there a way where we can go... (7 Replies)
Discussion started by: RubinPat
7 Replies

6. Shell Programming and Scripting

Converting hex value 7C (for pipe) to CRLF in Unix

I am trying to convert a txt file that includes one long string of data. The lines are separated with hex value 7C (for pipe). I am trying to process this file using SQR (Peoplesoft) so I thought the easiest thing to do would be to replace the eol char with a CRLF in unix so I can just... (4 Replies)
Discussion started by: sfedak
4 Replies

7. UNIX for Dummies Questions & Answers

Passing struct through unix pipe -solved

EDIT: Nevermind, called a friend who is good at this stuff and he figured it out :D Hi all, So I'm trying to teach myself to write programs for unix in c. I am currently creating a program, and I need to pass a struct through a pipe, but I can't figure out how. The struct I want to pass... (0 Replies)
Discussion started by: twnsfn34
0 Replies

8. Shell Programming and Scripting

Replacing UNIX 1 byte delimiters to the pipe separator

Hi I am new to Unix Shell scripting have a requirement where I have to replace the "unix 1 byte delimiter" with the "pipe" separator and also remove any carriage returns and line feeds if any The Source File 4 QFH Jungle Hill 32-34 City Road London SE23 3UX the output should be ... (3 Replies)
Discussion started by: dJHa
3 Replies

9. Shell Programming and Scripting

UNIX fifo concurrent read from a named pipe

I have created a fifo named pipe in solaris, which writes the content of a file, line by line, into pipe as below: $ mkfifo namepipe $ cat books.txt "how to write unix code" "how to write oracle code" $ cat books.txt >> namepipe & I have a readpipe.sh script which reads the named... (2 Replies)
Discussion started by: naveen mani
2 Replies

10. UNIX for Beginners Questions & Answers

UNIX Pipe -Exit when there are no bytes to read

Hi All, I'm creating a program which reads millions of bytes from the PIPE and do some processing. As the data is more, the idea is to read the pipe parallely. Sun Solaris 8 See the code below: #!/bin/sh MAXTHREAD=30 awk '{print $1}' metadata.csv > nvpipe & while do ... (3 Replies)
Discussion started by: mr_manii
3 Replies
sigtrap(3pm)						 Perl Programmers Reference Guide					      sigtrap(3pm)

NAME
sigtrap - Perl pragma to enable simple signal handling SYNOPSIS
use sigtrap; use sigtrap qw(stack-trace old-interface-signals); # equivalent use sigtrap qw(BUS SEGV PIPE ABRT); use sigtrap qw(die INT QUIT); use sigtrap qw(die normal-signals); use sigtrap qw(die untrapped normal-signals); use sigtrap qw(die untrapped normal-signals stack-trace any error-signals); use sigtrap 'handler' => &my_handler, 'normal-signals'; use sigtrap qw(handler my_handler normal-signals stack-trace error-signals); DESCRIPTION
The sigtrap pragma is a simple interface to installing signal handlers. You can have it install one of two handlers supplied by sigtrap itself (one which provides a Perl stack trace and one which simply "die()"s), or alternately you can supply your own handler for it to install. It can be told only to install a handler for signals which are either untrapped or ignored. It has a couple of lists of signals to trap, plus you can supply your own list of signals. The arguments passed to the "use" statement which invokes sigtrap are processed in order. When a signal name or the name of one of sigtrap's signal lists is encountered a handler is immediately installed, when an option is encountered it affects subsequently installed handlers. OPTIONS
SIGNAL HANDLERS These options affect which handler will be used for subsequently installed signals. stack-trace The handler used for subsequently installed signals outputs a Perl stack trace to STDERR and then tries to dump core. This is the default signal handler. die The handler used for subsequently installed signals calls "die" (actually "croak") with a message indicating which signal was caught. handler your-handler your-handler will be used as the handler for subsequently installed signals. your-handler can be any value which is valid as an assignment to an element of %SIG. See perlvar for examples of handler functions. SIGNAL LISTS sigtrap has a few built-in lists of signals to trap. They are: normal-signals These are the signals which a program might normally expect to encounter and which by default cause it to terminate. They are HUP, INT, PIPE and TERM. error-signals These signals usually indicate a serious problem with the Perl interpreter or with your script. They are ABRT, BUS, EMT, FPE, ILL, QUIT, SEGV, SYS and TRAP. old-interface-signals These are the signals which were trapped by default by the old sigtrap interface, they are ABRT, BUS, EMT, FPE, ILL, PIPE, QUIT, SEGV, SYS, TERM, and TRAP. If no signals or signals lists are passed to sigtrap, this list is used. For each of these three lists, the collection of signals set to be trapped is checked before trapping; if your architecture does not implement a particular signal, it will not be trapped but rather silently ignored. OTHER untrapped This token tells sigtrap to install handlers only for subsequently listed signals which aren't already trapped or ignored. any This token tells sigtrap to install handlers for all subsequently listed signals. This is the default behavior. signal Any argument which looks like a signal name (that is, "/^[A-Z][A-Z0-9]*$/") indicates that sigtrap should install a handler for that name. number Require that at least version number of sigtrap is being used. EXAMPLES
Provide a stack trace for the old-interface-signals: use sigtrap; Ditto: use sigtrap qw(stack-trace old-interface-signals); Provide a stack trace on the 4 listed signals only: use sigtrap qw(BUS SEGV PIPE ABRT); Die on INT or QUIT: use sigtrap qw(die INT QUIT); Die on HUP, INT, PIPE or TERM: use sigtrap qw(die normal-signals); Die on HUP, INT, PIPE or TERM, except don't change the behavior for signals which are already trapped or ignored: use sigtrap qw(die untrapped normal-signals); Die on receipt one of an of the normal-signals which is currently untrapped, provide a stack trace on receipt of any of the error-signals: use sigtrap qw(die untrapped normal-signals stack-trace any error-signals); Install my_handler() as the handler for the normal-signals: use sigtrap 'handler', &my_handler, 'normal-signals'; Install my_handler() as the handler for the normal-signals, provide a Perl stack trace on receipt of one of the error-signals: use sigtrap qw(handler my_handler normal-signals stack-trace error-signals); perl v5.18.2 2013-11-04 sigtrap(3pm)
All times are GMT -4. The time now is 08:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy