What is /dev/tty /dev/null and /dev/console


 
Thread Tools Search this Thread
Operating Systems Solaris What is /dev/tty /dev/null and /dev/console
# 8  
Old 01-03-2008
No problem. That was indeed hypothetical as AFAIK there is no (simple) command available to change a symbolic link permissions, one good reason being the command would have been useless anyway.
# 9  
Old 01-03-2008
Agreed about it being useless because POSIX requires the permission bits on the link to be ignored and treated as 777, however "chmod -h" will change the permissions of a symlink on systems that allow it (BSD).

Last edited by reborg; 01-03-2008 at 07:43 PM.. Reason: correct myself.
# 10  
Old 01-03-2008
Brain running slow today, see update below.
# 11  
Old 01-03-2008
Correct, however Solaris chmod doesn't implement (yet?) that useless option.
# 12  
Old 01-03-2008
I would like to plug my article, Unix File Permissions, which discusses this stuff.
# 13  
Old 01-04-2008
Smilie I rememberd that after my last post and went to it to make sure I had *finally* remembered correctly.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. HP-UX

Dev/urandom and dev/random missing in HP-UX

Hi, In our HP-UX B.11.11. I could not find dev/urandom and dev/random Are all pseudo-devices implemented as device drivers, or in need to run /configure some package to install the package to have dev/urandom. Please help (4 Replies)
Discussion started by: rashi
4 Replies

2. Red Hat

Changing grub from /dev/sda to /dev/sdb

Hi, Please suggest steps to change grub from /dev/sda to /dev/sdb, (1 Reply)
Discussion started by: manoj.solaris
1 Replies

3. Shell Programming and Scripting

Automating partitioning setup of /dev/sda on /dev/sdc

Objective: To recreate the partitioning setup of /dev/sda on /dev/sdc How would I parse the below information and initialize variables (an array?) that can be used to build sgdisk commands in a script, regardless of the number of partitions? Something along the lines of: sgdisk -n... (12 Replies)
Discussion started by: RogerBaran
12 Replies

4. AIX

Problem in /dev/hd1 and /dev/hd9var

Hello AIXians, I can't boot my AIX, it hangs and stops at the code error: 0518 After searching google, I knew the problem is due to problems in File Systems. So the solution is booting from any bootable media, then run these commands in maintenance mode: #fsck -y /dev/hd4 #fsck -y... (3 Replies)
Discussion started by: Mohannad
3 Replies

5. AIX

Difference between /dev/hdisk and /dev/rhdisk

Hi, How can i check that i am using RAW devices for storage in my AIX machine... Also after adding a LUN from storage to a aix host, when i check /dev in the host, i can see both rhdisk and hdisk with same number eg: dcback1(root):/dev>ls -lrt | grep disk12 crw------- 1 root ... (4 Replies)
Discussion started by: jibujacob
4 Replies

6. Solaris

Lun remove, stuck in /dev/dsk and /dev/rdsk

So, we removed a LUN from the SAN and the system is refusing to remove the references to it in the /dev folder. I've done the following: devfsadm -Cv powermt -q luxadm -e offline <drive path> luxadm probe All those commands failed to remove the path. The drive stills shows up as <drive... (13 Replies)
Discussion started by: DustinT
13 Replies

7. Shell Programming and Scripting

Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:... (5 Replies)
Discussion started by: jbmorrisonjr
5 Replies

8. UNIX for Dummies Questions & Answers

Reading password from /dev/tty

hi, From the below script: ##########################################pwd_auth.sh######################################################################################## #Author: Pandeeswaran Bhoopathy #Written on:26th Jan 2012 2:00PM #This script describes the feature of stty and illustrates... (3 Replies)
Discussion started by: pandeesh
3 Replies

9. UNIX for Dummies Questions & Answers

/dev/null 2>&1 Versus /dev/null 2>1

How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&" echo "hello" > /dev/null 2>&1 echo "hello" > /dev/null 2>1 (3 Replies)
Discussion started by: glev2005
3 Replies

10. Programming

sniff /dev/tty

hello all, Being root, I would like to log user activity (also multiple root activity), i don't really like history file based logging, lets assume that users have access to their .profile. I would like to write a monitoring daemon in C that would capture /dev/ttys, so I need to do a... (0 Replies)
Discussion started by: wayward
0 Replies
Login or Register to Ask a Question