06-20-2008
hot to specify the last column in sed?
should be a pretty simple problem, but it appears that I can't not specify the last column using sed
say I want to replace every aa with YY except the last colum in file test
$ cat /tmp/test
aa aa aa aa aa
c b c d aa a
e f ff mm aaa aaa 123
I was thinking about using
sed '/ [^ ]*$/!s/aa/YY/g' /tmp/test
but I just realized that this is totally wrong, so how can I specify the last column in sed?
Thanks!
Last edited by fedora; 06-20-2008 at 04:31 PM..
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FPUTCSV(3) 1 FPUTCSV(3)
fputcsv - Format line as CSV and write to file pointer
SYNOPSIS
int fputcsv (resource $handle, array $fields, [string $delimiter = ","], [string $enclosure = '"'], [string $escape_char = "
DESCRIPTION
fputcsv(3) formats a line (passed as a $fields array) as CSV and write it (terminated by a newline) to the specified file $handle.
PARAMETERS
o $handle
-The file pointer must be valid, and must point to a file successfully opened by fopen(3) or fsockopen(3) (and not yet closed by
fclose(3)).
o $fields
- An array of values.
o $delimiter
- The optional $delimiter parameter sets the field delimiter (one character only).
o $enclosure
- The optional $enclosure parameter sets the field enclosure (one character only).
o $escape_char
- The optional $escape_char parameter sets the escape character (one character only).
RETURN VALUES
Returns the length of the written string or FALSE on failure.
CHANGELOG
+--------+---------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------+
| 5.5.4 | |
| | |
| | The $escape_char parameter was added |
| | |
+--------+---------------------------------------+
EXAMPLES
Example #1
fputcsv(3) example
<?php
$list = array (
array('aaa', 'bbb', 'ccc', 'dddd'),
array('123', '456', '789'),
array('"aaa"', '"bbb"')
);
$fp = fopen('file.csv', 'w');
foreach ($list as $fields) {
fputcsv($fp, $fields);
}
fclose($fp);
?>
The above example will write the following to file.csv:
aaa,bbb,ccc,dddd
123,456,789
"""aaa""","""bbb"""
NOTES
Note
If PHP is not properly recognizing the line endings when reading files either on or created by a Macintosh computer, enabling the
auto_detect_line_endings run-time configuration option may help resolve the problem.
SEE ALSO
fgetcsv(3).
PHP Documentation Group FPUTCSV(3)