And if I got you right, instead of using external commands (ls and grep), you could write a terse version using directory handles and the grep built-in operator:
Hi all,
I have a question on how to search for a pattern in a file and return a value if it is present at that particular location.
How to read each line and each character for the pattern in the file of any format.
Eg for the file format:
attached the file (1 Reply)
Hi,
I need to search a file, in each line I need to check for occurance of '1' from a particular position through the next 32 bytes. If 1 is found, i need to return the position. Here is an example of the file and the output i need. Please help. I'm new to perl and unix.
File:
... (1 Reply)
Hi all,
I would like to print words in a file seperated by whitespaces containing a specific pattern like "="
e.g. I have a file1 containing strings like
%cat file1
The= some= in
wish= born
<eof> .I want to display only those words containing = i.e The= , some=,wish=
... (5 Replies)
Hi All,
Please can someone assist in the script I have made that searches a pattern in a file and delete the whole line containing the pattern.
#!bin/sh
# The pattern that user want to add to the files
echo "Enter the pattern of the redirect"
read value
# check if the user has... (1 Reply)
Hi All,
I have written the below script that searches for the pattern in a file and delete them if present. please can some one have a look and suggest the changes in the script.
#!bin/sh
# The pattern that user want to add to the files
echo "Enter the pattern of the redirect"
read... (4 Replies)
Hi Guys,
I am writing a shell script to extract only the error message from a log file.
I am having difficulty in searching the highlighted text in the below code.
<runtimeinfo datetime="Sun Apr 04 20:02:52 EDT 2008" docid="" source="RAWDATA" event="ERROR"... (2 Replies)
Hi,
I would like to search the pattern based on the date like "2010/08/15". I tried using / in the file giving /<<pattern>>. when i tried this it turns to /2010/+8, but not going to the pattern what ever i want.
This is how the data in the file.
INFO | jvm 1 | 2010/05/26 13:30:33... (5 Replies)
The problem is similar to my yesterday post
I Would like an awk script that does the following:
I have a file (f1) that contains 1
2
3
4
5and another one (f2) that contains 8|a
9|b
0|c
1|d
2|e
3|f
4|g
5|h
6|i
7|jAnd I'd like to get this:
1|d
2|e
3|f
4|g (5 Replies)
Hi All,
i have an output of command vmstat as below :
$ vmstat
System configuration: lcpu=4 mem=5376MB ent=1.00
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------------------
r b avm fre re pi... (10 Replies)
Discussion started by: omkar.jadhav
10 Replies
LEARN ABOUT PHP
readdir
READDIR(3) 1 READDIR(3)readdir - Read entry from directory handleSYNOPSIS
string readdir ([resource $dir_handle])
DESCRIPTION
Returns the name of the next entry in the directory. The entries are returned in the order in which they are stored by the filesystem.
PARAMETERS
o $dir_handle
- The directory handle resource previously opened with opendir(3). If the directory handle is not specified, the last link opened
by opendir(3) is assumed.
RETURN VALUES
Returns the entry name on success or FALSE on failure.
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
EXAMPLES
Example #1
List all entries in a directory
Please note the fashion in which readdir(3)'s return value is checked in the examples below. We are explicitly testing whether the
return value is identical to (equal to and of the same type as--see Comparison Operators for more information) FALSE since other-
wise, any directory entry whose name evaluates to FALSE will stop the loop (e.g. a directory named "0").
<?php
if ($handle = opendir('/path/to/files')) {
echo "Directory handle: $handle
";
echo "Entries:
";
/* This is the correct way to loop over the directory. */
while (false !== ($entry = readdir($handle))) {
echo "$entry
";
}
/* This is the WRONG way to loop over the directory. */
while ($entry = readdir($handle)) {
echo "$entry
";
}
closedir($handle);
}
?>
Example #2
List all entries in the current directory and strip out . and ..
<?php
if ($handle = opendir('.')) {
while (false !== ($entry = readdir($handle))) {
if ($entry != "." && $entry != "..") {
echo "$entry
";
}
}
closedir($handle);
}
?>
SEE ALSO is_dir(3), glob(3), opendir(3), scandir(3).
PHP Documentation Group READDIR(3)