02-12-2012
how to use "cut" or "awk" or "sed" to remove a string
logs:
[Sun Feb 12 10:36:20 2012] "/home/abc/public_html/index.php"
[Sun Feb 12 10:36:20 2012] "/home/abc/public_html/index.php"
[Sun Feb 12 10:36:20 2012] "/home/xyz/public_html/index.php"
[Sun Feb 12 10:36:21 2012] "/home/xyz/public_html/index.php"
[Sun Feb 12 10:36:21 2012] "/home/xyz/public_html/index.php"
how to use "cut" or "awk" or "sed" to get the following result:
[Sun Feb 12 10:36:20 2012] abc
[Sun Feb 12 10:36:20 2012] abc
[Sun Feb 12 10:36:20 2012] xyz
[Sun Feb 12 10:36:21 2012] xyz
[Sun Feb 12 10:36:21 2012] xyz
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GETOPT(3) 1 GETOPT(3)
getopt - Gets options from the command line argument list
SYNOPSIS
array getopt (string $options, [array $longopts])
DESCRIPTION
Parses options passed to the script.
PARAMETERS
o $options
- Each character in this string will be used as option characters and matched against options passed to the script starting with a
single hyphen ( -). For example, an option string "x" recognizes an option -x. Only a-z, A-Z and 0-9 are allowed.
o $longopts
- An array of options. Each element in this array will be used as option strings and matched against options passed to the script
starting with two hyphens ( --). For example, an longopts element "opt" recognizes an option --opt.
The $options parameter may contain the following elements:
oIndividual characters (do not accept values)
oCharacters followed by a colon (parameter requires value)
oCharacters followed by two colons (optional value)
Option values are the first argument after the string. If a value is required, it does not matter whether the value has leading white
space or not. See note.
Note
Optional values do not accept " " (space) as a separator.
Note
The format for the $options and $longopts is almost the same, the only difference is that $longopts takes an array of options
(where each element is the option) whereas $options takes a string (where each character is the option).
RETURN VALUES
This function will return an array of option / argument pairs or FALSE on failure.
Note
The parsing of options will end at the first non-option found, anything that follows is discarded.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | Added support for "=" as argument/value separa- |
| | tor. |
| | |
| 5.3.0 | |
| | |
| | Added support for optional values (specified |
| | with "::"). |
| | |
| 5.3.0 | |
| | |
| | Parameter $longopts is available on all systems. |
| | |
| 5.3.0 | |
| | |
| | This function is no longer system dependent, and |
| | now works on Windows, too. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
getopt(3) example: The basics
<?php
// Script example.php
$options = getopt("f:hp:");
var_dump($options);
?>
shell> php example.php -fvalue -h
The above example will output:
array(2) {
["f"]=>
string(5) "value"
["h"]=>
bool(false)
}
Example #2
getopt(3) example: Introducing long options
<?php
// Script example.php
$shortopts = "";
$shortopts .= "f:"; // Required value
$shortopts .= "v::"; // Optional value
$shortopts .= "abc"; // These options do not accept values
$longopts = array(
"required:", // Required value
"optional::", // Optional value
"option", // No value
"opt", // No value
);
$options = getopt($shortopts, $longopts);
var_dump($options);
?>
shell> php example.php -f "value for f" -v -a --required value --optional="optional value" --option
The above example will output:
array(6) {
["f"]=>
string(11) "value for f"
["v"]=>
bool(false)
["a"]=>
bool(false)
["required"]=>
string(5) "value"
["optional"]=>
string(14) "optional value"
["option"]=>
bool(false)
}
Example #3
getopt(3) example: Passing multiple options as one
<?php
// Script example.php
$options = getopt("abc");
var_dump($options);
?>
shell> php example.php -aaac
The above example will output:
array(2) {
["a"]=>
array(3) {
[0]=>
bool(false)
[1]=>
bool(false)
[2]=>
bool(false)
}
["c"]=>
bool(false)
}
SEE ALSO
$argv.
PHP Documentation Group GETOPT(3)