Permission bit translator - octal to textual and vice versa
Hi,
Does anyone know of any permission bit "translator"? One that can translate the permission bit from its textual value to its octal value and vice versa. It is alright if it is always just rwx but on a lot of occasions nowadays, getting a lots of s, S, t, etc.
Code:
-rwxrwxrwx 1 oracle dba 0 Mar 11 13:27 x ==> 777
-rwxr-x--- 1 oracle dba 0 Mar 11 13:27 y ==> 750
-rw-r----- 1 oracle dba 0 Mar 11 13:27 z ==> 640
Sometimes I receive a request to change the octal value of the permission, i.e. do chmod 640, chmod 655 etc., and I want to know how it is supposed to look like after I've done the change so I can verify its ls -l output before and after the change. Am finidng it tedious to remember the text equivalence of the octal values ... is there a trick to that
What am wanting to do is to be able to read a list of file from a directory and then display their permission bit, in both textual and octal, ls -l will do the trick for the textual, but don't know how to do the octal bit. At the same time, also being able to run the script in such a way that when I give 777 as a parameter, it will display -rwxrwxrwx.
So for example, if the script is called checkperm.ksh, if I run it as checkperm.ksh /usr/test, it will list the files in that directory and display its permission bit, both octal and textual. If I run checkperm.ksh 750, it should display that 750 is -rwxr-x---
I found one in Google that is similar to what I wanted, but it is an online permission bit translator, not a script ...
please let me know that in unix using c programming language we can do binary to string conversion and vice versa using ltoa and atol but how can we do it in c++ programming language.
thank you in advance. (3 Replies)
Hello,
can sed be used to convert all letters of a file from uppercase to lowercase and vice versa?i know tr command can be used but with sed is it possible?
i came up with this :-
sed 'y///' file1
actually the above command is also not working! Please help me. Thanks in advance :) (6 Replies)
Hi,
I have a pdf file. i want to convert it to text file and do some work on it and later want to convert it back to pdf. Can this be done via unix?
or
Is there a way unix can directly work on PDF file? (2 Replies)
Hi,
I am new to Unix and discovered this example problem online that I believe will help my learning:
Run the command's below
env >> xx
env >> xx
env >> xx
env >> xx
env >> xx
You will now have a file called XX with the env redirected into it 5 times
Create a script named... (2 Replies)
i am thinking of replacing my vista with ubuntu.
Questions:
1) what will be the advantages and disadvantages of using ubuntu instead of vista?
2) what will be the setbacks of replacing my vista?
3) how hard is it to cope up with the new OS? what must i learn to utilize ubuntu? (1 Reply)
Hi
I have a system PRIMARY where I can push or pull files to/from STANDBY using scp. I can also ssh without entering a password.
On the STANDBY system if I try and use scp or ssh it asks for a password.
I checked in ~/.ssh and there was no authorized_keys file on the PRIMARY server. After... (2 Replies)
I need to write a script that will take the input from a file and convert the number from centigrade to fahrenheit and vice versa.
This is what I have but it doesn't seem to be correct.
Also the data file has 11 numbers inside of it and the output needs to be listed as so:
Fahrenheit Temperature... (18 Replies)
Hi all,
I installed Oracle virtual box 4.1.8 on my desktop. I installed Windows 2008 server R2 as one instance and Solaris 10 as another instance. When am trying to ping from Windows to solaris and vice-versa, ping not working.
windows IP : 10.1.47.24
Solaris IP : 10.1.47.25
netstat... (2 Replies)
Hi,
In unix or linux is there any command exist to identify Host Name to IP Address or Vice Versa?
Thanks in advance (6 Replies)
Discussion started by: nag_sathi
6 Replies
LEARN ABOUT V7
chmod
CHMOD(1) General Commands Manual CHMOD(1)NAME
chmod - change mode
SYNOPSIS
chmod mode file ...
DESCRIPTION
The mode of each named file is changed according to mode, which may be absolute or symbolic. An absolute mode is an octal number con-
structed from the OR of the following modes:
4000 set user ID on execution
2000 set group ID on execution
1000 sticky bit, see chmod(2)
0400 read by owner
0200 write by owner
0100 execute (search in directory) by owner
0070 read, write, execute (search) by group
0007 read, write, execute (search) by others
A symbolic mode has the form:
[who] op permission [op permission] ...
The who part is a combination of the letters u (for user's permissions), g (group) and o (other). The letter a stands for ugo. If who is
omitted, the default is a but the setting of the file creation mask (see umask(2)) is taken into account.
Op can be + to add permission to the file's mode, - to take away permission and = to assign permission absolutely (all other bits will be
reset).
Permission is any combination of the letters r (read), w (write), x (execute), s (set owner or group id) and t (save text - sticky). Let-
ters u, g or o indicate that permission is to be taken from the current mode. Omitting permission is only useful with = to take away all
permissions.
The first example denies write permission to others, the second makes a file executable:
chmod o-w file
chmod +x file
Multiple symbolic modes separated by commas may be given. Operations are performed in the order specified. The letter s is only useful
with u or g.
Only the owner of a file (or the super-user) may change its mode.
SEE ALSO ls(1), chmod(2), chown (1), stat(2), umask(2)CHMOD(1)
03-10-2011
