File manipulation place 0 before the number using sed
I'm new with sed, and i am really confused with slashes, backslashes, parentheses, I've tried reading some beginner's guide, but still trouble fixing this problem, do you have any tips where or what to read to learn more about sed? can you also help me with my problem?
Note: I was tasked to use sed on this.
Sample file:
I need to add 0 if the number in day is 1 only (ex. Oct 7 2019 to Oct 07 2019).
I've tried to sed, but the Oct 17 was changed to Oct 017
Thank you in advance
Last edited by RavinderSingh13; 10-10-2019 at 05:27 AM..
Hi,
I have a file name, for which I want to strip out the first bit and leave the rest...
So I want to take the file name .lockfile-filename.10001 ,strip it and have only filename.10001 ...
Thanking you all inadvance,
Zak (6 Replies)
Hello,
if I've a list of number
23
34
56
78
how I can place a sequence of ordinated number in a boundary column so
1 23
2 34
3 56
4 78
Thanks in advance! (3 Replies)
Hi All,
I want to read one number from the file.
Only one number will be there in the file.
then i have to increment the number in my script and put it back in the same file.
Is it possible?
Can anybody help me?
Thanks,
Vinay (6 Replies)
Hello
How do i check that correct input files are used while using AWk and SED for file manipulation?
e.g
awk '/bin/ {print $0 }' shell.txt
sed 's/hp/samsung/' printers.txt
how do i ensure that the correct input files I am working with are used? (5 Replies)
I have large number of data files, close to 300 files, lets say all files are same kind and have extension .dat , each file have mulitple lines in it.
There is a unique line in each file containing string 'SERVER'. Right after this line there is another line which contain a string 'DIGIT=0',... (4 Replies)
Hi,
I would really appreciate some help, I couldn't nail my problem:
I would like to create some setter and getter functions to make my life easier.
my sample file contains:
keyword - some tabs - value - semicolon
number 12.1;
float .3;
double 12;
real 12.2324;
stuff .234;
decimal... (5 Replies)
I have a comma separated file containing numbers, I would like to read the file and divide each number by 1024 and create an output file.
Input file :
50312.00,3434.05, ,3433.34,124344.00,434343.00, , ,
Output file:
49.13,3.35,3.35,0,12.05,424.16,0,0
Please click this link: How to... (2 Replies)
I am trying to count the number of records from different files using grep, and then place the result in a separate variable for each file, so at the end of my shell script, I can sum all the variables and check if the number of records are equal to what I was expecting. It is weird butwc -ldoes... (2 Replies)
Hello, I have a large flat file where i need to change data in columns 131-133 based on what is in columns 172-173. I am not sure if I need to read the file line by line and make the change or if I can do this in a single statement. thank you (3 Replies)
Hi I was hoping someone could help me with a sed script I am trying to write? I am on a Mac running ElCapitan
I have some text that I have converted from a pdf that I want to format into an xml file.
In the file I have managed to delete all the text I do not need. The text I have left is... (8 Replies)
Discussion started by: Paul Walker
8 Replies
LEARN ABOUT PHP
clearstatcache
CLEARSTATCACHE(3) 1 CLEARSTATCACHE(3)clearstatcache - Clears file status cacheSYNOPSIS
void clearstatcache ([bool $clear_realpath_cache = false], [string $filename])
DESCRIPTION
When you use stat(3), lstat(3), or any of the other functions listed in the affected functions list (below), PHP caches the information
those functions return in order to provide faster performance. However, in certain cases, you may want to clear the cached information. For
instance, if the same file is being checked multiple times within a single script, and that file is in danger of being removed or changed
during that script's operation, you may elect to clear the status cache. In these cases, you can use the clearstatcache(3) function to
clear the information that PHP caches about a file.
You should also note that PHP doesn't cache information about non-existent files. So, if you call file_exists(3) on a file that doesn't
exist, it will return FALSE until you create the file. If you create the file, it will return TRUE even if you then delete the file. How-
ever unlink(3) clears the cache automatically.
Note
This function caches information about specific filenames, so you only need to call clearstatcache(3) if you are performing multi-
ple operations on the same filename and require the information about that particular file to not be cached.
Affected functions include stat(3), lstat(3), file_exists(3), is_writable(3), is_readable(3), is_executable(3), is_file(3), is_dir(3),
is_link(3), filectime(3), fileatime(3), filemtime(3), fileinode(3), filegroup(3), fileowner(3), filesize(3), filetype(3), and fileperms(3).
PARAMETERS
o $clear_realpath_cache
- Whether to clear the realpath cache or not.
o $filename
- Clear the realpath and the stat cache for a specific filename only; only used if $clear_realpath_cache is TRUE.
RETURN VALUES
No value is returned.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | Added optional $clear_realpath_cache and $file- |
| | name parameters. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
clearstatcache(3) example
<?php
$file = 'output_log.txt';
function get_owner($file)
{
$stat = stat($file);
$user = posix_getpwuid($stat['uid']);
return $user['name'];
}
$format = "UID @ %s: %s
";
printf($format, date('r'), get_owner($file));
chown($file, 'ross');
printf($format, date('r'), get_owner($file));
clearstatcache();
printf($format, date('r'), get_owner($file));
?>
The above example will output something similar to:
UID @ Sun, 12 Oct 2008 20:48:28 +0100: root
UID @ Sun, 12 Oct 2008 20:48:28 +0100: root
UID @ Sun, 12 Oct 2008 20:48:28 +0100: ross
PHP Documentation Group CLEARSTATCACHE(3)