sed 's/abc/xyz/g' abc.txt > abc.txt
This change all the abc s in abc.txt to xyz s but does not write back to the abc.txt.
Suggest me the cleaner way without using temp file please.
Cheers,
Amol. (3 Replies)
Hello!
Please bare with me, I'm a total newbie to scripting. Here's the sudo code of what I'm trying to do:
Get file name
Does file exist?
If true
get length of file name
get network id (this will be the last 3 numbers of the file name)
loop x 2
If... (1 Reply)
hello, I'm trying to write the fastest sed command possible (large files will be processed) to replace RICH with NICK in a file which looks like this (below) if the occurance of RICH is uppercase, replace with uppercase if it's lowercase, replace with lowercase
SOMTHING_RICH_SOMTHING <- replace... (10 Replies)
Hi All,
After reading that the sort command in Linux can be made to use many processor cores just by using a simple script which I found on the internet, I was wondering if I can use similar techniques for programs like the awk and sed?
#!/bin/bash
# Usage: psort filename <chunksize>... (7 Replies)
I want to make the first character of some words to be uppercase. I have a file like the one below.
uid,givenname,sn,cn,mail,telephonenumber
mattj,matt,johnson,matt johnson,mattj@gmail.com
markv,mark,vennet,matt s vennet,markv@gmail.com
mikea,mike,austi,mike austin,mike@gmail.com
I want... (3 Replies)
i have something like this in a file
cat onlytables.sql
create table NextID (
id int auto_increment,
zoneID int,
entityName varchar(64),
nextID int,
lastModified TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
primary... (6 Replies)
how can i make find/sed to include directory names with spaces
the command is like this
for i in `find wp-content/themes -type f -print0 | xargs -0 grep -l
-iE 'e'`;do sed -i -e 's/word1/word2/gI' "$i";done
but it skips one directory names with spaces
sed: can't read ./Nova: No such... (5 Replies)
Hi All,
I am new to unix.
In this forum some days back, I have read something like below:
1) Do not use perl if awk can do your work.
2) Do not use awk if sed can do your work.
.
.
.
I do not re-collect the whole thing. I think it is good to know the precedence of using these... (2 Replies)
Dears,
In the below string, please let me know how to make the sed search case-incensitive. I have more such lines in my script instead of let me know any other easier option.
sed -n '/dn: MSISDN=/,/^\s*$/p' full.ldif > temp ; sed -n... (4 Replies)
Discussion started by: Kamesh G
4 Replies
LEARN ABOUT PHP
substr_compare
SUBSTR_COMPARE(3) 1 SUBSTR_COMPARE(3)substr_compare - Binary safe comparison of two strings from an offset, up to length charactersSYNOPSIS
int substr_compare (string $main_str, string $str, int $offset, [int $length], [bool $case_insensitivity = false])
DESCRIPTION substr_compare(3) compares $main_str from position $offset with $str up to $length characters.
PARAMETERS
o $main_str
- The main string being compared.
o $str
- The secondary string being compared.
o $offset
- The start position for the comparison. If negative, it starts counting from the end of the string.
o $length
- The length of the comparison. The default value is the largest of the length of the $str compared to the length of $main_str
less the $offset.
o $case_insensitivity
- If $case_insensitivity is TRUE, comparison is case insensitive.
RETURN VALUES
Returns < 0 if $main_str from position $offset is less than $str, > 0 if it is greater than $str, and 0 if they are equal. If $offset is
equal to or greater than the length of $main_str, or the $length is set and is less than 1 (prior to PHP 5.6), substr_compare(3) prints a
warning and returns FALSE.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.6.0 | |
| | |
| | $length may now be 0. |
| | |
| 5.1.0 | |
| | |
| | Added the possibility to use a negative $offset. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
A substr_compare(3) example
<?php
echo substr_compare("abcde", "bc", 1, 2); // 0
echo substr_compare("abcde", "de", -2, 2); // 0
echo substr_compare("abcde", "bcg", 1, 2); // 0
echo substr_compare("abcde", "BC", 1, 2, true); // 0
echo substr_compare("abcde", "bc", 1, 3); // 1
echo substr_compare("abcde", "cd", 1, 2); // -1
echo substr_compare("abcde", "abc", 5, 1); // warning
?>
SEE ALSO strncmp(3).
PHP Documentation Group SUBSTR_COMPARE(3)