Thank you very much for replying so quickly to my post. Could you please kindly explain the first example you gave me, because I do not understand how to apply it and will like to try it.
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)
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)
Hi,
I already have one CPP program which invokes the C program.And the C program contains whole function definitions..!This is a working program..I have to enable the logs in both CPP as well as in the C program ..!So I am reading the enviornmental variable log path from the CPP and doing the... (2 Replies)
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)
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)
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)
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)
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)
Linux Redhat, BASH Shell.
I want to put this in my .bash_profile
I have log files that go to directory paths based in part on other variables such as went DB Name is set in memory. So if the DB Name changes the path to the log file changes. How do I create an environment variable I put into... (6 Replies)
Discussion started by: guessingo
6 Replies
LEARN ABOUT OPENDARWIN
printenv
PRINTENV(1) BSD General Commands Manual PRINTENV(1)NAME
printenv, env -- print out the environment, set and print environment
SYNOPSIS
printenv [name]
env [-i] [name=value ...] [utility [argument ...]]
DESCRIPTION
The printenv utility prints out the names and values of the variables in the environment, with one name/value pair per line. If name is
specified, only its value is printed.
Some shells may provide a builtin printenv command which is similar or identical to this utility. Consult the builtin(1) manual page.
The env utility executes utility after modifying the environment as specified on the command line. The option name=value specifies an envi-
ronment variable, name, with a value of value.
The options are as follows:
-i Execute the utility with only those environment values specified. The environment inherited by env is ignored completely.
If no utility is specified, env prints out the names and values of the variables in the environment, with one name/value pair per line.
The env utility is sometimes useful with the ``#!'' construct (see execve(2)). The only difference between ``#!/usr/local/bin/foo'' and
``#!/usr/bin/env /usr/local/bin/foo'' is that the latter works even if /usr/local/bin/foo is itself interpreted. Using env this way also
allows one to reference foo without the path, as well as set up the environment as desired.
ENVIRONMENT
The env utility uses the PATH environment variable is used to locate the requested utility if the name contains no '/' characters.
DIAGNOSTICS
The printenv utility exits 0 on success, and >0 if an error occurs.
The env utility exits 0 on success, and >0 if an error occurs. An exit status of 126 indicates utility was found, but could not be executed.
An exit status of 127 indicates utility could not be found.
COMPATIBILITY
The env utility accepts the - option as a synonym for -i.
SEE ALSO csh(1), sh(1), execvp(3), environ(7)STANDARDS
The env utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The printenv command appeared in 3.0BSD.
BUGS
The env utility doesn't handle utility arguments with equal (``='') signs in their names, for obvious reasons.
BSD June 6, 1993 BSD