eval is useful when cmd contains something which needs to be evaluated by the shell. The typical case would be when you have a variable containing the index of an argument you want to access.
Hi, experts.
Whould anybody clear explay me difference and usage of these 3 commands (particulary in bash) :
exec
eval
source
I've tryed to read the manual pages but did not get much.
Also could not get something useful from Google search - just so much and so not exactly, that is... (3 Replies)
In POSIX shell, we don't have arrays, but we can iterate over a list like this:
#!/bin/sh
list="Fred Barney Wilma Betty"
for i in $list; do echo $i; done
Fred
Barney
Wilma
Betty
But let's say we want "Mr. Slate" in the list.
We know we can't just stick him in there like this:... (5 Replies)
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
I am stuck on something that should really be simple, and was looking for some help..
I am new to shell scripting.Need help on this.....
The script is to find the stale nfs.
cat file
- - - - /abcd/1234
I am writing the script to check the nfs errors of above file
... (3 Replies)
According to the POSIX specifications eval is a special shell built-in, which should imply that variable assignments specified together with it should remain in effect after the built-in completes. Thus one would expect IFS to be changed after this:
var=$'a\nb c'
$ IFS=$'\n' eval '
for i in... (4 Replies)
Gents,
I have been working in a Solaris/Unix environment for about 9 months. I took some linux classses online before getting the job. But, I am not very good at scripting. I want to learn how to script. Do you think that I should start with Shell scripting or Perl? I wanted to continue with... (2 Replies)
Hi all,
some small script with eval turned me to crazy.
my OS is linux
Linux s10-1310 2.6.16.53-0.8.PTF.434477.3.TDC.0-smp #1 SMP Fri Aug 31 06:07:27 PDT 2007 x86_64 x86_64 x86_64 GNU/Linux
below script works well
#!/bin/bash
eval ssh remotehost date
eval ssh remotehost ls
below... (1 Reply)
anyone has any info on why this is complaining???
vivek@vivek-c5e55ef2e ~/TAC
$ zoneCounter=1
vivek@vivek-c5e55ef2e ~/TAC
$ optUsage1=23%
vivek@vivek-c5e55ef2e ~/TAC
$ eval eval echo "<th>Zone $zoneCounter </th><th align=\"left\"> \$optUsage$zoneCounter </th>"
-bash: syntax error... (13 Replies)
Discussion started by: vivek d r
13 Replies
LEARN ABOUT PHP
rawurlencode
RAWURLENCODE(3) 1 RAWURLENCODE(3)rawurlencode - URL-encode according to RFC 3986SYNOPSIS
string rawurlencode (string $str)
DESCRIPTION
Encodes the given string according to RFC 3986.
PARAMETERS
o $str
- The URL to be encoded.
RETURN VALUES
Returns a string in which all non-alphanumeric characters except -_.~ have been replaced with a percent ( %) sign followed by two hex dig-
its. This is the encoding described in RFC 3986 for protecting literal characters from being interpreted as special URL delimiters, and for
protecting URLs from being mangled by transmission media with character conversions (like some email systems).
Note
Prior to PHP 5.3.0, rawurlencode encoded tildes ( ~) as per RFC 1738.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.4 | |
| | |
| | Tilde characters are no longer encoded when |
| | rawurlencode(3) is used with EBCDIC strings. |
| | |
| 5.3.0 | |
| | |
| | Now conforms to RFC 3986. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
including a password in an FTP URL
<?php
echo '<a href="ftp://user:', rawurlencode('foo @+%/'),
'@ftp.example.com/x.txt">';
?>
The above example will output:
<a href="ftp://user:foo%20%40%2B%25%2F@ftp.example.com/x.txt">
Or, if you pass information in a PATH_INFO component of the URL:
Example #2
rawurlencode(3) example 2
<?php
echo '<a href="http://example.com/department_list_script/',
rawurlencode('sales and marketing/Miami'), '">';
?>
The above example will output:
<a href="http://example.com/department_list_script/sales%20and%20marketing%2FMiami">
SEE ALSO rawurldecode(3), urldecode(3), urlencode(3), RFC 3986.
PHP Documentation Group RAWURLENCODE(3)