02-02-2009
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Probably a simple one.
Basically I am retrieving a number from a file - setting a variable against it and then incrementing this by 1 and using this as an entry number in a log file for messages. I need the variable to re-evalute itself each time I call it so I get the latest number in the file -... (1 Reply)
Discussion started by: frustrated1
1 Replies
2. Shell Programming and Scripting
Hi all,
I have a script that runs perfectly from cmd, but in the cron it gives a strange ':::::::::::::::' output instead of evaluating the part inside the quotes.
this is the script:
bash-3.00# more test
#!/bin/ksh
#-----swap---
TEMP_FILE=/HealthCheck/test/file.txt
swap -s | tee... (1 Reply)
Discussion started by: kerrygold
1 Replies
3. Shell Programming and Scripting
Hello,
I have this:
#!/usr/bin/ksh
V1=ABC
str="hello 123;${V1}"
eval "echo $str"
i get
hello 123
/script.sh ABC not found
However eval works if $str variable doesn't contain a semicolumn (eg if str="hello 123~${v1}"
running the eval statement above would produce (2 Replies)
Discussion started by: endorphin
2 Replies
4. Shell Programming and Scripting
How to evaluate the value of a variable ?
For example:
a=var
$a=value !!!error happens!!!
I want to evaluate var=value, how to realize it?
Thanks!
---------- Post updated at 03:37 AM ---------- Previous update was at 02:22 AM ----------
I am using linux bash.
a=var
$a=value... (4 Replies)
Discussion started by: 915086731
4 Replies
5. Shell Programming and Scripting
I have a situation where i need to evaluate expression and do substitutions in file
file.ports
port1=`expr $STARTINGPORT + 1`
port2=`expr $STARTINGPORT + 2`
port3=`expr $STARTINGPORT + 3`
Intended output If my STARINGPORT is 100
port1=101
port2=102
port3=103
Can anyone please... (1 Reply)
Discussion started by: sasiharitha
1 Replies
6. UNIX for Dummies Questions & Answers
In BASH, how does ||: get interpreted. I know || is logical or. And I believe : evaluates to true. Can someone give a thorough explanation for this usage?
Example
for i in $IGGY
do
&& skipdb=1 || : (6 Replies)
Discussion started by: glev2005
6 Replies
7. Shell Programming and Scripting
Hi,
I am trying to set a variable that has time the format desired. And my intention is to echo variable (instead of actual date command) everytime I like to echo date. Please take a look at below code.
$NOW=''
echo $NOW
After 5 minutes
$echo $NOW
Issue here is , I am not... (2 Replies)
Discussion started by: vinay4889
2 Replies
8. Shell Programming and Scripting
I am trying to write a simple function to select values from a database and assign them to variables. It can have any number of arguments sent into it, and I want to assign the value retrieved to a different variable name for each argument sent in. So my code looks something like this:
... (6 Replies)
Discussion started by: DJR
6 Replies
9. UNIX for Advanced & Expert Users
I have to display only those subscribers which are in "unconnected state" and the date is 90 days older than today's date.
Below command is used for this purpose:
cat vfsubscriber_20170817.csv | sed -e 's/^"//' -e '1d' | \
nawk -F '",' '{if ( (substr($11,2,4) == 2017) && ( substr($11,2,8)... (1 Reply)
Discussion started by: dia
1 Replies
PUTENV(3) 1 PUTENV(3)
putenv - Sets the value of an environment variable
SYNOPSIS
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)