Sponsored Content
Full Discussion: Lsof output
Operating Systems OS X (Apple) Lsof output Post 302774413 by bakunin on Friday 1st of March 2013 08:19:26 PM
Old 03-01-2013
Quote:
Originally Posted by sakurashinken
besides the process, process id and owner, I have no idea what these things are. Could someone explain?
Probably shared-memory segments or temporary files. It is hard to tell without the output surrounding it.

Quote:
Originally Posted by sakurashinken
Also, what is /dev/random?
A device which produces a (pseudo-)random sequence of numbers, one every time you query it. For some things in UNIX one needs a random generator (for instance: the retransmission time offset if an Ethernet packet collides with another).

Random bits of "noise" is collected systemwide (i.e. from device drivers) in an "entropy pool". From this pool very high-quality random numbers are generated, but "/dev/random" will stop once the entropy pool is depleted until it is refilled. In most systems there is also a "/dev/urandom", which is will not block in this case, but produce "less random" (the numbers are more predictable).

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

lsof output

I have a number of open files connecting to the rpcbind process running on HPUX 11.00. Usinf lsof -p rpcbind I am unable to identify the ip addresses of the open files. Example of one below - Any ideas? rpcbind 19754 root 100u inet 72,0x72 0t0 TCP 79.60.53.40:* (BOUND) (2 Replies)
Discussion started by: Malcolmm
2 Replies

2. Filesystems, Disks and Memory

lsof

Could someone please give me a step for a hint on which version and where is the above utility is for version 4.3.3.0 of Aix. (1 Reply)
Discussion started by: jacl
1 Replies

3. UNIX for Dummies Questions & Answers

lsof output

what does this line of output signify from the lsof output: java 1419 root 7u sock 0,0 2170 can't identify protocol Thanks (2 Replies)
Discussion started by: skotapal
2 Replies

4. UNIX for Dummies Questions & Answers

lsof ???

Hi All, I'm having a problem with "lsof" in HP-UX system. Its giving me 2 two different results when running it. 1 . lsof -p 'PID' | wc -l -----gives some value 2 . lsof | grep 'PID' | wc -l The above two commands gives me two different values with the same PID...... Thanks (6 Replies)
Discussion started by: marc
6 Replies

5. UNIX for Dummies Questions & Answers

lsof corrupted output

When I execute lsof command to some process IDs I am getting the the following output. lsof +p 27672 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 27672 alttool cwd vx_inode: wrong ino size Why it is displaying 'vx_inode: wrong... (3 Replies)
Discussion started by: balajilinks
3 Replies

6. HP-UX

lsof equivalent in HP-UX

I need lsof equivalent in HP-UX. I do not want to add lsof utility separately. (1 Reply)
Discussion started by: deo_kaustubh
1 Replies

7. UNIX for Dummies Questions & Answers

lsof

I'm looking to list all of the files open at a certain time up on a UNIX box. From looking on the internet, it looks as though lsof is the most common. However have tried this and got the following: ksh: lsof: not found Now having gone into bash mode and hit tab twice I see that lsof... (3 Replies)
Discussion started by: meevagh
3 Replies

8. UNIX for Dummies Questions & Answers

about lsof

Hi, I typed lsof -i :80 in my putty but i am not able to get sockets related to port 80 Can any one help me out soon Can anyone point out the reason for not able to get the related sockets Output of what i am getting in my putty is displayed below training@use:~> lsof -i :80... (4 Replies)
Discussion started by: satheeshkr_cse
4 Replies

9. HP-UX

lsof in HP-UX

In Linux and Solaris lsof accepts the -X switch which allows to see if deleted files are still in use and eat disk space. In HP-UX it is now working and it is a problem... today one of my filesystems on the server was increasing very fast but existing file sizes were not really changing. lsof shows... (3 Replies)
Discussion started by: Vorb
3 Replies

10. Shell Programming and Scripting

Lsof command

Hi, I am trying to find the files in a specific directory that are currently in open state. I need this information to archive the old files that are not active in the directory. I get the following output when I try the command $ lsof +d '/var/tmp/'|awk '{print $9}'|sort -u NAME... (1 Reply)
Discussion started by: ryzen7
1 Replies
LFC-CHOWN(1)							 LFC User Commands						      LFC-CHOWN(1)

NAME
lfc-chown - change owner and group of a LFC directory/file in the name server SYNOPSIS
lfc-chown [-h] [-R] owner[:group] path... lfc-chown [-h] [-R] :group path... DESCRIPTION
lfc-chown sets the owner and/or the group of a LFC directory/file in the name server to the values in owner and group respectively. To change the owner ID, if the group ID does not change and if the caller and the new owner ID belong to that group, GRP_ADMIN privilege is needed, otherwise the caller must have ADMIN privilege in the Cupv database. To change the group ID, the effective user ID of the process must match the owner ID of the file and the new group must be in the list of groups the caller belong to or the caller must have ADMIN privilege in the Cupv database. owner is either a valid username or a valid numeric ID. group is either a valid group name or a valid numeric ID. path specifies the LFC pathname. If path does not start with /, it is prefixed by the content of the LFC_HOME environment variable. OPTIONS
The following options are supported: -h If path is a symbolic link, changes the ownership of the link itself. -R Recursive mode. EXIT STATUS
This program returns 0 if the operation was successful or >0 if the operation failed. SEE ALSO
Castor_limits(4), lfc_chown(3), Cupvlist(1) AUTHOR
LCG Grid Deployment Team LFC
$Date: 2007/01/15 08:05:17 $ LFC-CHOWN(1)
All times are GMT -4. The time now is 11:11 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy