The command above will execute one chmod command for every file it finds. In theory less efficient because of the overhead of starting a new process for each file.
Quote:
The second command invokes one chmod process to set the permissions on all of the files that are discovered by find. The biggest potential problem with this command is that the number of files found could cause the command argument limit to be exceeded. If you are wanting to minimise the number of chmod processes that are started, this would be the best method:
The xargs command will invoke chmod with the output from find, ensuring that the maximum argument limit isn't exceeded. If it has to, it will invoke chmod more than once, but you won't have a 1:1 ratio of chmod processes to files found.
I was wondering what the difference was between the two commands, I understand that locate won't search for files with certain permissions set. Are there any others?
Thanks (1 Reply)
I have a file which gets appended with records daily..for eg. 1st day of the month i get 9 records ,2nd day 9 records .....till the last day in the month...the no of records may vary...i store the previous days file in a variable oldfile=PATH/previousdaysfile....i store the current days file in a... (6 Replies)
I need to find the difference between two files in UNIX. I tried diff, but couldn't get it right.
There are two files:
file1: apple
mango
strawberry
banana
grape
file2: grape
apple
banana
I need an output file like below: ... (11 Replies)
I have two files as below
File1:
a
b
c
d
File2:
a
b
When i find the difference the output would be c&d..
How can i get my requirement...pls help...
Many thanks in advance (10 Replies)
I have 2 files as follows.
file1.txt
<cell>123</cell>
<cell>345</cell>
file2.txt
<cell>123</cell>
<cell>456</cell>
out out should be
output.txt
<cell>456></cell>
How do we achieve this> The difference betwenn the two files should be wirtten to the output file..
... (2 Replies)
Hi,
The requirement is to compare two files that has single column of records each. Comparison is to happen on a whole and not line by line.
File1.txt
314589929
315611087
304924413
315989094
301171509
302984393
315609549
314593632
File2.txt
315611087
304924413
315989094 (2 Replies)
I have a file wich contains time formats and i need to get the time difference
TIME1 TIME2
==================================
20120624192555.6Z 20120624204006.5Z
which means first date 2012/6/24 19:25:55,second date 2012/6/24 20:40:06 so when i get the time... (1 Reply)
I have a file wich contains time formats and i need to get the time difference
TIME1 TIME2
=============== ===================
20120624192555.6Z 20120624204006.5Z
which means first date 2012/6/24 19:25:55,second date 2012/6/24 20:40:06 so when i get the time... (23 Replies)
Hi All,
Please find my problem below:
I have a file at two different nodes dev and test
1st find> find /u/dev/local/abc -name ab.dat
--Since this file can be in several sub directories
2nd find> find /u/test/local/abc -name ab.dat
I find my 1st find result and do compare with 2nd... (5 Replies)
Hi Friends,
I need to find the difference between two files ,
File_1 contained 4 columns, and File_2 contained 4 columns,
I need to find the difference using 1st column,
Or need to find the difference using 3st column, (6 Replies)
Discussion started by: Shenbaga.d
6 Replies
LEARN ABOUT PHP
umask
UMASK(3) 1 UMASK(3)umask - Changes the current umaskSYNOPSIS
int umask ([int $mask])
DESCRIPTION umask(3) sets PHP's umask to $mask & 0777 and returns the old umask. When PHP is being used as a server module, the umask is restored when
each request is finished.
PARAMETERS
o $mask
- The new umask.
RETURN VALUES umask(3) without arguments simply returns the current umask otherwise the old umask is returned.
EXAMPLES
Example #1
umask(3) example
<?php
$old = umask(0);
chmod("/path/some_dir/some_file.txt", 0755);
umask($old);
// Checking
if ($old != umask()) {
die('An error occurred while changing back the umask');
}
?>
NOTES
Note
Avoid using this function in multithreaded webservers. It is better to change the file permissions with chmod(3) after creating the
file. Using umask(3) can lead to unexpected behavior of concurrently running scripts and the webserver itself because they all use
the same umask.
PHP Documentation Group UMASK(3)