10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Is there a way I could recover a deleted text file with "rm -rf" command.
Running CentOS 6.5.
Thank you. (5 Replies)
Discussion started by: galford
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2. Shell Programming and Scripting
Hey guys.
I have been trying to figure out an easy way to seperate a liste of 150k numbers (10 digits) in a .txt file into odd and even numbers with each of their own files, for a project at work.
I've tried Excel, but it was too much for it and it wasnt very simple. So i gave up after... (13 Replies)
Discussion started by: TranceC
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3. UNIX for Dummies Questions & Answers
Hi All,
Could you please help to resolve my following issues:
Problem Description:
Suppose my user name is "MI90".
i.e. $USER = MI90
when i run below command, i get all the processes running on the system containing name MQ.
ps -ef | grep MQ
But sometimes it lists... (8 Replies)
Discussion started by: KDMishra
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4. Shell Programming and Scripting
Hi,
I wrote a small program to read lines from a file and count the lines. The program is as below:
filename=$1
count=0
cat $filename | while read -r line
do
printf "%5d:%s\n" $count "$line"
count=$((count + 1))
done
echo " $count "
After I run the program, the result is... (4 Replies)
Discussion started by: jianma
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5. Shell Programming and Scripting
Hello,
I want to sort/identify 600 files according to odd or even numbers in the files names. How can I do this?
The goal is to perform different ImageMagick operations based on even or odd numbers in the file names. The file names have this pattern: bdf0001.tif, bdf0044.tif and bdf0136.tif
... (4 Replies)
Discussion started by: garganmou
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6. UNIX for Dummies Questions & Answers
Hi,
We have a file which needs supper user previleges to delete. There are 10 users having super user preveleges. Some times back that file got deleted. How to know who has deleted that file? (6 Replies)
Discussion started by: siba.s.nayak
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7. Solaris
Hi Folks ,
Would be grateful if someone could help me out in one of the question that came to my mind . If the /etc/passwd file has been deleted and the system has been rebooted . Then i dont think that any user would be able to login and the system will be useless . Whats the best solution for... (5 Replies)
Discussion started by: gera_sachin125
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8. Shell Programming and Scripting
Please provide me a shell script so that i can list which file or directory has been deleted, by which user and at what time. The script should take date as argument and should list out name of the file/directory, which user had deleted them and at what time since that particular date. Kindly post. (1 Reply)
Discussion started by: raviviolet13
1 Replies
9. Linux
I am a relatively new linux user.would like to know how to undo a deleted file (2 Replies)
Discussion started by: wojtyla
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10. UNIX for Dummies Questions & Answers
OS: Solaris 2.6
File with no name created Mar of 2000 - ls (with or without options) shows the file but no name associated with it.
Example:
ls -ltca
-rw-r--r-- 1 root other 9721 Apr 16 2003 printcap
-rw-r--r-- 1 root other 267 Apr 16 2003
-rw-r--r-- 1 root other 258 Apr 16... (3 Replies)
Discussion started by: RTM
3 Replies
CHMOD(3) 1 CHMOD(3)
chmod - Changes file mode
SYNOPSIS
bool chmod (string $filename, int $mode)
DESCRIPTION
Attempts to change the mode of the specified file to that given in $mode.
PARAMETERS
o $filename
- Path to the file.
o $mode
- Note that $mode is not automatically assumed to be an octal value, so to ensure the expected operation, you need to prefix $mode
with a zero (0). Strings such as "g+w" will not work properly.
<?php
chmod("/somedir/somefile", 755); // decimal; probably incorrect
chmod("/somedir/somefile", "u+rwx,go+rx"); // string; incorrect
chmod("/somedir/somefile", 0755); // octal; correct value of mode
?>
man 1 chmod' and ' man 2 chmod'.
<?php
// Read and write for owner, nothing for everybody else
chmod("/somedir/somefile", 0600);
// Read and write for owner, read for everybody else
chmod("/somedir/somefile", 0644);
// Everything for owner, read and execute for others
chmod("/somedir/somefile", 0755);
// Everything for owner, read and execute for owner's group
chmod("/somedir/somefile", 0750);
?>
RETURN VALUES
Returns TRUE on success or FALSE on failure.
NOTES
Note
The current user is the user under which PHP runs. It is probably not the same user you use for normal shell or FTP access. The
mode can be changed only by user who owns the file on most systems.
Note
This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Note
When safe mode is enabled, PHP checks whether the files or directories you are about to operate on have the same UID (owner) as the
script that is being executed. In addition, you cannot set the SUID, SGID and sticky bits.
SEE ALSO
chown(3), chgrp(3), fileperms(3), stat(3).
PHP Documentation Group CHMOD(3)