----- the dot after \( is represents an any character. The * after the dot means 'to have a character 0 or more times' (Therefore I do not understand the BMDancorrection with addition the [^=] - the ^ inside of the [] means 'not'; not sure if '=' get some meaning, but without any special meaning the [^=]* means: 'does not have '=' 0 or more times' that make no sence for me. Also, Ive checked the 'PASS=' and it has been selected (as expected) by the ^.*PASS= ... - so, I am not clear what the note was about)
Try the following as an input:
and you'll understand my change. "Does not have '=' 0 or more times" is a poor way to describe it; "0 or more characters that aren't a '='", or more simply, "grab characters until you hit a '='" would be more accurate.
Hi!
How-to get the environment variables in GNU.
getenv() only fetches the ones that you can find under export (not the ones under declare)...
best regars .David (2 Replies)
hi,
I want to create a new EV(Environment Variable) through a c program and I done this thing through setenv() method. But the newly created EV is not permanent, i.e. when I exit from the program the EV also no longer lives. But I want to make it a permanent EV for the current user. Actually I... (6 Replies)
using sed to replace a specific string on a specific line number using variables
this is where i am at
grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean
grep -n Destination... (2 Replies)
Hello,
I want to writte a script that replace two character strings by two variables with the command sed butmy solution doesn't work. I'm written this: sed "s/TTFactivevent/$TTFav/g && s/switchSLL/$SLL/g" templatefile.
I want to replace TTFactivevent by the variable $TTFav, that is a... (4 Replies)
Hello Everyone
I need to create a script file which must append some lines to a target text file, I'm using sed for windows, the script file look like this:
{
a\
STRINGTABLE DISCARDABLE\
BEGIN\
5, 150 {a\
#define RC_SHELL, "%ID_SHELL%"\
#define RC_NAME, "%ID_NAME%"\
END
}
... (1 Reply)
Hi Experts,
Need your help in understanding the commands to setup the environment variables in hp-ux.
Beleive need to use either set,setenv or export.
I am confused between above three options, when to use which option?
On command line, I have tried both set and setenv but couldn't... (1 Reply)
1. The problem statement:
What is the mesg value set for your environment? If it is on, how would you turn off your current
session? How would you set it permanently?
3. The attempts at a solution :
Read Unix The textbook.
3rd chapter has many things like environment variables and... (5 Replies)
Hi Everyone,
I need some help with sed and I'm totally new to it.
I have a template file with variables in it. These variables start with a '$' sign and are exactly one character long (plus the '$' sign). For example: $a, $b, etc.
Each variable should be replaced with the contents of a... (9 Replies)
Hi All,
I need to understand following three environment variables and their usages in HP Unix.
_M_ARENA_OPTS
_M_CACHE_OPTS
PTHREAD_SCOPE_SYSTEM
How does these environment variables influence multi threaded applciation and how do we decide the value of these variables? Is there... (0 Replies)
Discussion started by: angshuman
0 Replies
LEARN ABOUT PHP
putenv
PUTENV(3) 1 PUTENV(3)putenv - Sets the value of an environment variableSYNOPSIS
bool putenv (string $setting)
DESCRIPTION
Adds $setting to the server environment. The environment variable will only exist for the duration of the current request. At the end of
the request the environment is restored to its original state.
Setting certain environment variables may be a potential security breach. The safe_mode_allowed_env_vars directive contains a comma-delim-
ited list of prefixes. In Safe Mode, the user may only alter environment variables whose names begin with the prefixes supplied by this
directive. By default, users will only be able to set environment variables that begin with PHP_ (e.g. PHP_FOO=BAR). Note: if this direc-
tive is empty, PHP will let the user modify ANY environment variable!
The safe_mode_protected_env_vars directive contains a comma-delimited list of environment variables, that the end user won't be able to
change using putenv(3). These variables will be protected even if safe_mode_allowed_env_vars is set to allow to change them.
PARAMETERS
o $setting
- The setting, like "FOO=BAR"
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Setting an environment variable
<?php
putenv("UNIQID=$uniqid");
?>
NOTES
Warning
The safe_mode_allowed_env_vars and safe_mode_protected_env_vars directives only take effect when safe_mode is enabled.
SEE ALSO getenv(3).
PHP Documentation Group PUTENV(3)