|
|
Sponsored Content
Top Forums
UNIX for Dummies Questions & Answers
Need Help Understanding a Unix Command
Post 302092430 by BOFH on Monday 9th of October 2006 07:48:54 PM
10-09-2006
Technically it's all "geek" to you 
Anyway, you should be able to man chmod to see what's going on. Quickly though.
-R - recursive, all files/directories under the directory identified will be modified
a - All three octets (user, group, and world perms) will be modified
+r - Add read access
. - file/directory to be modified
So the first command says to add read access to all users for all files in the current directory and all subdirectories
The second command is already mostly explained.
+w - Add write access
logo.gif tempdir/ templates_c/ - files/directories to be modified
The reason you'd use this format is that you don't want to modify any subdirectories or files other than the read and/or write access bits.
Carl
Anyway, you should be able to man chmod to see what's going on. Quickly though.
-R - recursive, all files/directories under the directory identified will be modified
a - All three octets (user, group, and world perms) will be modified
+r - Add read access
. - file/directory to be modified
So the first command says to add read access to all users for all files in the current directory and all subdirectories
The second command is already mostly explained.
+w - Add write access
logo.gif tempdir/ templates_c/ - files/directories to be modified
The reason you'd use this format is that you don't want to modify any subdirectories or files other than the read and/or write access bits.
Carl
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello:
I'm a totally newbie here. My company has UNIX. My development team would like me to learn UNIX and shell scripting.
I've worked with Linux in the past, very briefly. I have Ubuntu installed on my laptop. I was wondering whether or not the shell scripting for Linux is the same... (0 Replies)
Discussion started by: hbradshaw
0 Replies
2. Shell Programming and Scripting
Hi All,
I search the forum for my query, Glad that got solution to it. But i really want to understand how does this command work.
sed -e ':a' -e 's/\("*\),\(*"\)/\1~\2/;ta'
Basically it is replacing all the comma(,) characters in between quotes with a tilde.
Specially what does ':a' ,... (2 Replies)
Discussion started by: DSDexter
2 Replies
3. Shell Programming and Scripting
Hi Guys,
I like to know if i have a process which triggers 10 different child processes.
How to identify out of the 11 processes running which is the parent process and what are the child process?
And if i kill the parent process will the child process be killed.. if not is there a way to... (2 Replies)
Discussion started by: mac4rfree
2 Replies
4. Shell Programming and Scripting
hi
i was moving a file from one directory to another with the following cmmand
mv /home/hsghh/dfd/parent/file.txt .
while doing so i i accidently
mv /home/hsghh/dfd/dfd .
although i gave ctrl c and terminate the move command some of the file are missing in the parent directory and... (1 Reply)
Discussion started by: saravanan71184
1 Replies
5. UNIX for Dummies Questions & Answers
Could you please explain me whats happening in the below code, appreciate your help, Thank you.
/product/apps/informatica/v7/pc/ExtProc/NewDAC/dacRecBuilder.sh
/product/apps/informatica/v7/pc/TgtFiles/NEW_DAC/DAC_Pos_TradeInv_Records.out ... (5 Replies)
Discussion started by: Ariean
5 Replies
6. Solaris
Hi
I have a questions related 2 commands : 'du' and 'ls'.
Why is the difference between output of 'du' and 'ls' cmd's ?
Command 'du' :
------------------
jakubn@server1 /home/jakubn $ du -s *
4 engine.ksh
1331 scripts
'du -s *' ---> shows block count size on disk (512 Bytes... (5 Replies)
Discussion started by: presul
5 Replies
7. Shell Programming and Scripting
Hi All,
Can you please help me interpret the following command. Which I am not able to understand. Also can you please illustrate what it is used for.
perl -pi -e 's/\015//g' text_file.dat
Regards (3 Replies)
Discussion started by: rakesh.su30
3 Replies
8. Shell Programming and Scripting
I want to understand what does this command do:confused::confused: find . \( -type f -o -type 1 \) Plz someone explain me ! Thanks much in advance!! (2 Replies)
Discussion started by: sears
2 Replies
9. UNIX for Dummies Questions & Answers
After running nm command on any object file from out put can we get to know that wheather a symbol is a call to a function or definition of function ?
I am searching a class and function definitions inside many .so files.
I have 3 files which contain the symbol but I don't know wheather they... (2 Replies)
Discussion started by: yatrik007
2 Replies
10. UNIX for Dummies Questions & Answers
Hi Friends,
I need a small help in understanding the below sed command.
$ cat t4.txt
1 root 1 58 0 888K 368K sleep 4:06 0.00% init
1 root 1 58 0 888K 368K sleep 4:06 0.00% init last
$ sed 's/*$//' t4.txt
1 root 1 58 0 888K ... (3 Replies)
Discussion started by: forroughuse
3 Replies
LEARN ABOUT DEBIAN
explain_chmod_or_die
explain_chmod_or_die(3) Library Functions Manual explain_chmod_or_die(3) NAME
explain_chmod_or_die - change permissions of a file and report errors SYNOPSIS
#include <libexplain/chmod.h> void explain_chmod_or_die(const char *pathname, int mode); DESCRIPTION
The explain_chmod_or_die function is used to call the chmod(2) system call. On failure an explanation wiil be printed to stderr, obtained from explain_chmod(3), and the the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: explain_chmod_or_die(pathname, mode); pathname The pathname, exactly as to be passed to the chmod(2) system call. mode The mode, exactly as to be passed to the chmod(2) system call. Returns: This function only returns on success. On failure, prints an explanation and exit(EXIT_FAILURE)s. COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller AUTHOR
Written by Peter Miller <pmiller@opensource.org.au> explain_chmod_or_die(3)