Sponsored Content
Top Forums Programming Setting Environment variable..! Post 302315703 by Kattoor on Wednesday 13th of May 2009 05:17:47 AM
Old 05-13-2009
Quote:
Originally Posted by jim mcnamara
Why will reading in a an environment variable and opening a file "a" (append) not work?
The file pointer will be at the end of the file?

Instead of explaining what you think should be done, please tell us your requirements.
There is some kind of misunderstanding about how file descriptors work going on here.
Hi,
I have to enable the logs in the application. And the log file should be read from the environment variable. The cpp and the c program (which includes all function definitions) also should contain the logs.

this is my requirement....Can anybody help me out...?

Thanks in advance..!!!
 

10 More Discussions You Might Find Interesting

1. Programming

Setting Environment Variable date

Hi to all... I'm currently running a C++ program in Unix environment and it is dependent to a Unix environment variable with a date value. ex: echo $DateToday 20060403 I want to change that date in my C++ program, changing the value date to 20061120 and revert back to original... (6 Replies)
Discussion started by: d3ck_tm
6 Replies

2. Programming

Setting environment variable using JNI call

I have function declaration in Java and same function definition written in C programming language.. A JNI call from Java is made to a fuction...Function would set the environment variable { putenv(cEnvString1);} using C-built -in function ..and later return the encrypted string... putenv is... (6 Replies)
Discussion started by: shafi2all
6 Replies

3. UNIX for Dummies Questions & Answers

setting environment variable in awk

Dear all, I have a data sample... Dose: Summed ROI: Bladder ************************** Bin Dose Volume 001 0.700 100.000 002 0.715 99.998 168 3.142 0.368 169 3.157 0.338 170 3.171 0.292 Dose: Summed ROI:... (2 Replies)
Discussion started by: tintin72
2 Replies

4. Shell Programming and Scripting

Setting Environment variable from value in file

I've searched Google and now this forum. Best guess is my search fu is not good (and it probably isn't). The Google search did bring me here. Background I have a number of Korn Shell scripts who all use one of 3 values for an environment variable used in the backup system. On occasion one or... (8 Replies)
Discussion started by: WolfBrother
8 Replies

5. Shell Programming and Scripting

Setting environment variable using shell script

Hi All, I'm trying to write an menu driven program to automate some functions which involve loging to multiple hosts. The hosts can differ for every use, so I thought I would use an config file to get the hostnames. Now I need to set those values in the config file to environment variable to... (6 Replies)
Discussion started by: arun_maffy
6 Replies

6. Shell Programming and Scripting

Dynamically setting of environment variable... Can it be done?

Hi all, I am fairly new to unix scripting and will like to know how to dynamically set the name of an environment variable to be used. We have a .env file where we defined the names and locations of data files, trigger files, directories .... etc Example of variables defined in .env... (4 Replies)
Discussion started by: Morelia
4 Replies

7. Shell Programming and Scripting

problem with setting environment variable

shell script: #!/bin/csh set VAR=12345 echo $VAR will peacefully give the output 12345 at shell. I need to use C++ to do the same in some part of the code: string str = "12345"; retValue="set var1= "+str; system(retValue1.c_str()); system("echo $var1"); This doesn't create a system... (1 Reply)
Discussion started by: harshvardhan360
1 Replies

8. UNIX for Dummies Questions & Answers

setting a environment variable on linux

I want to set a enviroment variable VDC_DIR to a particular directory. I am doing it as export VDC_DIR=/abc it gets set but when i logout and do relogin than its not there. one way could be setting it in .profile file. but i have seen it on another box where it is not present in... (2 Replies)
Discussion started by: Jcpratap
2 Replies

9. UNIX for Dummies Questions & Answers

Setting environment variable problem in Ubuntu?

I am trying to install timbl- memory based learner tools in ubuntu. it after unpacking the tar file it brings the following msg No package 'ticcutils' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you... (1 Reply)
Discussion started by: gbdaw
1 Replies

10. UNIX for Dummies Questions & Answers

STTY Columns Setting Environment Variable?

I am wondering about the following: stty columns 140 I have found that a number of times I need to set my display columns to a high number (such as 140) but I have to do this every time I login to use putty/ssh. Can we set this with an environmental variable so that it is permanent? Also... (4 Replies)
Discussion started by: newbie2010
4 Replies
elf_version(3E) 														   elf_version(3E)

NAME
elf_version() - coordinate ELF library and application versions SYNOPSIS
Command: [flag]... file... [library]... DESCRIPTION
As elf(3E) explains, the program, the library, and an object file have independent notions of the "latest" ELF version. lets a program determine the ELF library's It further lets the program specify what memory types it uses by giving its own ver, to the library. Every program that uses the ELF library must coordinate versions as described below. The header file supplies the version to the program with the macro If the library's internal version (the highest version known to the library) is lower than that known by the program itself, the library may lack semantic knowledge assumed by the program. Accordingly, will not accept a working version unknown to the library. Passing a ver equal to causes to return the library's internal version, without altering the working version. If ver is a version known to the library, returns the previous (or initial) working version number. Otherwise, the working version remains unchanged and returns EXAMPLES
The following excerpt from an application program protects itself from using an older library. if (elf_version(EV_CURRENT) == EV_NONE) { /* library out of date */ /* recover from error */ } WARNINGS
The working version should be the same for all operations on a particular ELF descriptor. Changing the version between operations on a descriptor will probably not give the expected results. SEE ALSO
elf(3E), elf_begin(3E), elf_xlate(3E). elf_version(3E)
All times are GMT -4. The time now is 01:59 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy