Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: File name suffix with a running number
Top Forums Shell Programming and Scripting File name suffix with a running number Post 302382987 by akshay61286 on Sunday 27th of December 2009 11:21:06 PM
Old 12-28-2009
Hi,

just had a query, suppose the number of files with the current date is large. then in that case you will have to obtain the maximum number by traversing the file names and sorting them to find the maximum number. wouldn't that be an overhead ?

had another idea:-
1) create a dir with the current date in a temp loc.
2) everytime you create a file, add a new file entry to this dir (any name will do). As a result when you create a new file , you only have to see the number of files in this dir, and then increment it by 1.
3) after midnight, delete the dir and create a new one by the new date. (cronjob)
this will hopefully save you some time.

cheers
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to limit the number of running instances of a script?

I would like to allow only one instance of a script to run at any moment. I've tried the following solution to count the instances but the result is always the number of running instances plus one and I can't find the problem ps -ef | grep $0 | sed '/^$/ d' | sed '/grep/ d' | wc -l Please... (2 Replies)
Discussion started by: oti
2 Replies

2. Shell Programming and Scripting

Determine Number of Processes Running

I am pretty new to unix, and I have a project to do. Part of the project asks me to determine the number of processes running and assign it to a variable. I know how to every part of the project but determine the number of processes running. How can I get just the number of processes... (4 Replies)
Discussion started by: wayne1411
4 Replies

3. Solaris

Number of threads running

Is there any command to find 1) the number of threads running 2) kernel boot mode in solaris box (2 Replies)
Discussion started by: vickylife
2 Replies

4. Shell Programming and Scripting

Keep a certain number of background processes running

I've got a bit of code I'm trying to work on... What i want to happen is ... at all times have four parallel mysql dump and imports running. I found the follow code snippet on the forum and modified it to work by starting four concurrent processes but it waits until all four are done before... (7 Replies)
Discussion started by: dgob123
7 Replies

5. Shell Programming and Scripting

How to Control Number of Processes Running

Hi Is there a way to count how many processes a script has started, count how many of these have finished, and make the script wait if their difference goes over a given threshold? I am using a script to repeatedly execute a code (~100x) which converts 2 data files into one .plt which is in... (4 Replies)
Discussion started by: drbones
4 Replies

6. Shell Programming and Scripting

Adding new lines to a file + adding suffix to a pattern

I need some help with adding lines to file and substitute a pattern. Ok I have a file: #cat names.txt name: John Doe stationed: 1 name: Michael Sweets stationed: 41 . . . And would like to change it to: name: John Doe employed permanently stationed: 1-office (7 Replies)
Discussion started by: hemo21
7 Replies

7. Shell Programming and Scripting

Finding which is Running number

Hi All, I have a list of data in the listing file and I run row by row to process the record, but how to identify what is the current process line number ? Thanks. (2 Replies)
Discussion started by: ckwan
2 Replies

8. UNIX for Dummies Questions & Answers

How do I find the number of processes running on root?

Is there a certain man command I'm missing here? I searched in ps but I couldn't find something that would give me the number of processes running on root. I only want to see the number of processes, not the processes itself. (2 Replies)
Discussion started by: l3monz
2 Replies

9. Shell Programming and Scripting

Lftp sftp get - script renames the local file with suffix tilde

Hi, Below script used for sftp get, #/bin/bash USER=xxx PASS=xxx HOST=xxx REMOTE_FILE=$1 LOCAL_FILE_LOC=$2 cd $LOCAL_FILE_LOC lftp sftp://$USER:$PASS@$HOST:10022 -e "get $REMOTE_FILE; bye" If file does not exist in sftp server, and file (same as remote file name) exists in local dir,... (4 Replies)
Discussion started by: vhegde1011
4 Replies

10. UNIX for Advanced & Expert Users

Prefix/Suffix on same file

Hi, I want to add prefix and suffix on line# 205 using SED or AWK and want to change on the same file without creating new file. This command will be used in the bash script Am using Bash shell Regards Nayaj (3 Replies)
Discussion started by: Nayaj
3 Replies

LEARN ABOUT CENTOS

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
All times are GMT -4. The time now is 04:49 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy