Sponsored Content
Top Forums Shell Programming and Scripting Multiple processes writing on the same file simultaneously Post 302160878 by Yogesh Sawant on Wednesday 23rd of January 2008 02:28:17 AM
Old 01-23-2008
this might be of help to you
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Creating user ids on multiple systems simultaneously

I am trying to think of a way to create user ids on multiple Linux systems in one fell swoop without logging onto each system indivually. Is there a way to do this with ssh commands? I don't want to use NIS/LDAP solution just a simple shell script utilitarian methodoloy would suffice. Also, I am... (1 Reply)
Discussion started by: darthur
1 Replies

2. Shell Programming and Scripting

renaming multiple files simultaneously

Hi , I have a large no of files which all end in .asp.htm extension . But for proper navigation between the pages I need to rename all those files as .asp only . How can it be done ? (4 Replies)
Discussion started by: nshailesh
4 Replies

3. Shell Programming and Scripting

Writing out 2nd column into one file from multiple files

I have several files that are being generated every 20 minutes. Each file contains 2 columns. The 1st column is Text, 2nd column is Data. I would like to generate one single file from all these files as follows: One instance of 1st column Text, followed by 2nd column Data separated by... (5 Replies)
Discussion started by: subhap
5 Replies

4. Programming

File access from multiple processes or threads?

Hi, Can anyone give me any idea when multiple processes access a file (like opening it, modifying it etc.) how can the synchronization can be done if they can access the same file at any time? How can this scenario is different from when multiple threads access a same file, modifying it etc- in... (7 Replies)
Discussion started by: sanzee
7 Replies

5. UNIX for Advanced & Expert Users

Multiple processes write to log file at the same time

If we have 3 process to write to same log file at the same time like below. will it cause the data outdated because the multiple process writing same time? It this a safe way to keep the log for multiple process? p1 >> test.log &; p2 >> test.log &; p3 >> test.log & Thanks, (1 Reply)
Discussion started by: casttree
1 Replies

6. UNIX for Dummies Questions & Answers

can I create symbolic links for multiple files simultaneously

Does anybody know how to make symbolic links for multiple files simultaneously? Often times I need make symbolic links for multiple files with some common pattern (just like "*.jpg"). Is there a way to avoid making symbolic link for each of them one by one... Thank you! (6 Replies)
Discussion started by: danieladna
6 Replies

7. UNIX for Dummies Questions & Answers

Writing a for loop that processes multiple input files

I would like to write a for loop that does the following: I have a file called X.txt and other files called 1.txt,2.txt, .....,1000.txt. I want to substitute the 6th column of the file X.txt with 1.txt and store the output as X.1. Then I want to do the same with X.txt and 2.txt and store the... (1 Reply)
Discussion started by: evelibertine
1 Replies

8. Shell Programming and Scripting

Writing a Perl Script that processes multiple files

I want to write a Perl script that manipulates multiple files. In the directory, I have files 250.*chr$.ped where * is from 1 to 1000 and $ is from 1-22 for a total of 22 x 10,000 = 22,000 files. I want to write a script that only manipulates files 250.1chr*.ped where * is from 1 to 22.... (10 Replies)
Discussion started by: evelibertine
10 Replies

9. Shell Programming and Scripting

Executing multiple ssh commands inside a shell simultaneously

I would like to execute a commands in four different servers through ssh at a single instance(simultaneously). Below are the details with examples, ssh user1@server1 "grep xxxx logs" ssh user1@server2 "grep xxxx logs" ssh user1@server3 "grep xxxx logs" Each statement will take some... (4 Replies)
Discussion started by: Amutha
4 Replies

10. Shell Programming and Scripting

How to run feeding each other processes simultaneously?

Hello, I need to run multiple shell processes simultaneously and output of the first process shall be the input of the second process but first process is never ending so both should be running in parallel. I do not wish to wait the end of the first process. I am under ubuntu 16.04. ... (3 Replies)
Discussion started by: baris35
3 Replies
term::ansi::ctrl::unix(n)					 Terminal control					 term::ansi::ctrl::unix(n)

__________________________________________________________________________________________________________________________________________________

NAME
term::ansi::ctrl::unix - Control operations and queries SYNOPSIS
package require Tcl 8.4 package require term::ansi::ctrl::unix ?0.1? ::term::ansi::ctrl::unix::import ?ns? ?arg...? ::term::ansi::ctrl::unix::raw ::term::ansi::ctrl::unix::raw ::term::ansi::ctrl::unix::columns ::term::ansi::ctrl::unix::rows _________________________________________________________________ DESCRIPTION
WARNING: This package is unix-specific and depends on the availability of two unix system commands for terminal control, i.e. stty and tput, both of which have to be found in the $PATH. If any of these two commands is missing the loading of the package will fail. The package provides commands to switch the standard input of the current process between raw and cooked input modes, and to query the size of terminals, i.e. the available number of columns and lines. API
INTROSPECTION ::term::ansi::ctrl::unix::import ?ns? ?arg...? This command imports some or all attribute commands into the namespace ns. This is by default the namespace ctrl. Note that this is relative namespace name, placing the imported command into a child of the current namespace. By default all commands are imported, this can howver be restricted by listing the names of the wanted commands after the namespace argument. OPERATIONS ::term::ansi::ctrl::unix::raw This command switches the standard input of the current process to raw input mode. This means that from then on all characters typed by the user are immediately reported to the application instead of waiting in the OS buffer until the Enter/Return key is received. ::term::ansi::ctrl::unix::raw This command switches the standard input of the current process to cooked input mode. This means that from then on all characters typed by the user are kept in OS buffers for editing until the Enter/Return key is received. ::term::ansi::ctrl::unix::columns This command queries the terminal connected to the standard input for the number of columns available for display. ::term::ansi::ctrl::unix::rows This command queries the terminal connected to the standard input for the number of rows (aka lines) available for display. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category term of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
ansi, columns, control, cooked, input mode, lines, raw, rows, terminal COPYRIGHT
Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net> term 0.1 term::ansi::ctrl::unix(n)
All times are GMT -4. The time now is 08:29 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy