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Top Forums UNIX for Dummies Questions & Answers Problem with sed wildcard "*" Post 302739135 by mukulverma2408 on Monday 3rd of December 2012 03:14:27 PM
Old 12-03-2012
Problem with sed wildcard "*"

Hi All,
can you help me with "*" wildcard character in sed, i am a bit confused. I am going through a reference and found that below code
Code:
sed -n '/a*c/' file

will also return a line that contain the string
Code:
output :
close the window properly

how is that possible when there is no "a" in this string?? how does this wildcard works.
Any reference/suggestion would be appreciated.
 

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MB_ENCODE_NUMERICENTITY(3)						 1						MB_ENCODE_NUMERICENTITY(3)

mb_encode_numericentity - Encode character to HTML numeric string reference

SYNOPSIS
string mb_encode_numericentity (string $str, array $convmap, [string $encoding = mb_internal_encoding()], [bool $is_hex = FALSE]) DESCRIPTION
Converts specified character codes in string$str from character code to HTML numeric character reference. PARAMETERS
o $str - The string being encoded. o $convmap -$convmap is array specifies code area to convert. o $encoding -The $encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used. o $is_hex - RETURN VALUES
The converted string. CHANGELOG
+--------+---------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------+ | 5.4.0 | | | | | | | Added $is_hex parameter. | | | | +--------+---------------------------+ EXAMPLES
Example #1 $convmap example <?php $convmap = array ( int start_code1, int end_code1, int offset1, int mask1, int start_code2, int end_code2, int offset2, int mask2, ........ int start_codeN, int end_codeN, int offsetN, int maskN ); // Specify Unicode value for start_codeN and end_codeN // Add offsetN to value and take bit-wise 'AND' with maskN, then // it converts value to numeric string reference. ?> EXAMPLES
Example #2 mb_encode_numericentity(3) example <?php /* Convert Left side of ISO-8859-1 to HTML numeric character reference */ $convmap = array(0x80, 0xff, 0, 0xff); $str = mb_encode_numericentity($str, $convmap, "ISO-8859-1"); /* Convert user defined SJIS-win code in block 95-104 to numeric string reference */ $convmap = array( 0xe000, 0xe03e, 0x1040, 0xffff, 0xe03f, 0xe0bb, 0x1041, 0xffff, 0xe0bc, 0xe0fa, 0x1084, 0xffff, 0xe0fb, 0xe177, 0x1085, 0xffff, 0xe178, 0xe1b6, 0x10c8, 0xffff, 0xe1b7, 0xe233, 0x10c9, 0xffff, 0xe234, 0xe272, 0x110c, 0xffff, 0xe273, 0xe2ef, 0x110d, 0xffff, 0xe2f0, 0xe32e, 0x1150, 0xffff, 0xe32f, 0xe3ab, 0x1151, 0xffff ); $str = mb_encode_numericentity($str, $convmap, "sjis-win"); ?> SEE ALSO
mb_decode_numericentity(3). PHP Documentation Group MB_ENCODE_NUMERICENTITY(3)
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