Sponsored Content
Full Discussion: Unique value added
Top Forums Shell Programming and Scripting Unique value added Post 302196354 by garric on Sunday 18th of May 2008 02:08:49 AM
Old 05-18-2008
Unique value added

Guys,

I am trying to get unique numbers which i can use as a primary key in a table. I tried using the <seconds_since_epoch>.<hostname> combination but since more than one process can run on the same machine at the same time, this won't be unique either. Can anyone tell me another way to do this? Thanks.

Regards,
garric
 

9 More Discussions You Might Find Interesting

1. Programming

How come nothing is added to utmp in this case?

Given the following: #include <string.h> #include <stdlib.h> #include <pwd.h> #include <unistd.h> #include <utmp.h> #include <stdio.h> #include <time.h> int main(int argc, char *argv) { struct utmp entry; char *fd; system("echo before adding entry:;who"); ... (1 Reply)
Discussion started by: frequency8
1 Replies

2. UNIX for Dummies Questions & Answers

Routes being automatically added

Hello, I have two AIX 5.3 servers that are supposedly set up exactly the same. The problem I am having is on one of the servers, it seems dynamic routes are being added mysteriously and non-periodically. This only happens on one server and not the other. Also, there doesn't seem to be a specific... (1 Reply)
Discussion started by: Conutmonky
1 Replies

3. Shell Programming and Scripting

get part of file with unique & non-unique string

I have an archive file that holds a batch of statements. I would like to be able to extract a certain statement based on the unique customer # (ie. 123456). The end for each statement is noted by "ENDSTM". I can find the line number for the beginning of the statement section with sed. ... (5 Replies)
Discussion started by: andrewsc
5 Replies

4. Shell Programming and Scripting

Change unique file names into new unique filenames

I have 84 files with the following names splitseqs.1, spliseqs.2 etc. and I want to change the .number to a unique filename. E.g. change splitseqs.1 into splitseqs.7114_1#24 and change spliseqs.2 into splitseqs.7067_2#4 So all the current file names are unique, so are the new file names.... (1 Reply)
Discussion started by: avonm
1 Replies

5. Red Hat

Static route not added

Hello Guys.. I am facing this weird problem of static route not added after reboot!! Following is my route-<interface> file.. # cat /etc/sysconfig/network-scripts/route-eth0 ADDRESS0=172.31.0.1 NETMASK0=255.255.255.255 GATEWAY0=192.168.208.1 ADDRESS1=172.31.15.2... (3 Replies)
Discussion started by: parth_buch
3 Replies

6. UNIX for Dummies Questions & Answers

Print unique lines without sort or unique

I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks. (7 Replies)
Discussion started by: cokedude
7 Replies

7. Shell Programming and Scripting

Count occurrence of column one unique value having unique second column value

Hello Team, I need your help on the following: My input file a.txt is as below: 3330690|373846|108471 3330690|373846|108471 0640829|459725|100001 0640829|459725|100001 3330690|373847|108471 Here row 1 and row 2 of column 1 are identical but corresponding column 2 value are... (4 Replies)
Discussion started by: angshuman
4 Replies

8. Shell Programming and Scripting

Error after I added several lines

I have added several lines to my code let cnt=0 if then if then cnt=`expr ${cnt} + 1` sftp_name=EOMMSRPT1 echo "EOMsftpname = ${sftp_name}" >> ${LOGF} ... (2 Replies)
Discussion started by: digioleg54
2 Replies

9. UNIX for Beginners Questions & Answers

Added Two Arrays But With Errors

Please could someone have a look at the code below and spot the cause of the error. Thanks in advance. CODE BELOW: (code tags now added) My apologies please, that was my first time here.:) #! /bin/bash # file: whileloop.sh arr1=(2 4 6 8) arr2=(3 6 9 12) arr3=() indextotal=(${#arr1})... (4 Replies)
Discussion started by: Chiadi
4 Replies
sethostid(2)							System Calls Manual						      sethostid(2)

NAME
sethostid - Sets the unique identifier of the current host SYNOPSIS
int sethostid ( int host_id ); PARAMETERS
Specifies the unique 32-bit identifier for the current host. DESCRIPTION
The sethostid() function allows a calling process with a root user ID to set a new 32-bit identifier for the current host. The sethostid() function enables an application program to reset the host ID. The host ID is a unique number that may be used by application programs. It is usually set to the primary Internet address of the local machine, represented as a network standard byte order integer. The sethostid() function fails if the calling process does not have superuser privilege. RETURN VALUES
Upon successful completion, the sethostid() function returns a value of 0 (zero). If the sethostid() function fails, a value of -1 is returned and errno is set to indicate the error. ERRORS
If the sethostid() function fails, errno may be set to the following value: The calling process does not have the appropriate privilege. RELATED INFORMATION
Commands: hostid(1). Functions: gethostid(2), gethostname(2). delim off sethostid(2)
All times are GMT -4. The time now is 05:55 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy