04-01-2001
"The /proc file system is only a "Virtual" file system. none of the files in /proc are really there-they're all, "pretend" files made up by the kernel to give you information about the system and don't take up any hard disk space.
Many programs actually gather information from files in /proc(ie. ps, top). /proc is a good source of information about your hardware, Memory and Performance. Most of it is read-only, but some files allow kernel variables to be changed in real time.
Catting proc will let you see what is in a particular file of proc:
cat /proc/meminfo
cat /proc/cpuinfo
and the number directories in /proc are running process information by PID.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hi,
we all know /proc is about the information of active process,
I have just read an artical which said you can use /proc/cpuinfo,
/proc/net./proc/meminfo etc. to know about some hardware
information .But I want to know how to use with command line? (1 Reply)
Discussion started by: fuqiang1976
1 Replies
2. UNIX for Advanced & Expert Users
Anyone know what the difference between the /proc filesystems under Linux and SunOS?
Thanx In Advance!
-Lola (1 Reply)
Discussion started by: Sparticus007
1 Replies
3. Programming
Hello all ,
We have a c program ,
it is running well on AIX 4.3.3.0 .But when we run it on
AIX 4.2.1.0 version the program exit when it begin to do this
command : Exec sql connect .
N.B: The version of C compiler is :4.2
Database :Oracle8
thanks in advance .
Elie . (2 Replies)
Discussion started by: eyounes
2 Replies
4. UNIX for Advanced & Expert Users
/proc is filing up my root filesystem. Can you delete any of the4 ID numbers out of /proc. Please help me. (3 Replies)
Discussion started by: aojmoj
3 Replies
5. UNIX for Dummies Questions & Answers
I did a search on this, but didn't find exactly the answer I'm looking for. What exactly is the proc directory for? Showing processes spawned by users? I ask because I have some very large files in that directory by multiple users and its affecting my disk usage. Can you limit how many... (2 Replies)
Discussion started by: kymberm
2 Replies
6. UNIX for Dummies Questions & Answers
Hi,
What are the various way's to fix /proc folder in redhat linux 7.2 and how to verify /proc folder is proper or croupted?
Thank in advance
Bache Gowda (7 Replies)
Discussion started by: bache_gowda
7 Replies
7. Programming
1. Software Requirments For Pro*c/c++ ,
2. Need Pro* C/c++ Compiler,
3. Documents For Installing Proc* C Compiler (3 Replies)
Discussion started by: contactmadhuin
3 Replies
8. Programming
:)
hi all !
Please help me
When I select data from oracle with proc * C prog.
I count the number of rows
For example the total rows is 1000000
but the number of result return is a limit number 5000 for ex
So How can I know this limit (5 Replies)
Discussion started by: iwbasts
5 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I am trying to calculate the CPU Usage by getting the difference between the idle time reported by /proc/stat at 2 different intervals. Now the 4th entry in the first line of /proc/stat will give me the 'idle time'. But I also came across /proc/uptime that gives me 2 entries : 1st one as the... (0 Replies)
Discussion started by: coderd
0 Replies
10. UNIX for Dummies Questions & Answers
If you are adding the kernel module without any module parameter passing, it should print out following information to info1 file so that user can make read access to info1 file (via, for example, cat /proc/info1):
• Processor type
• Kernel version
• Total number of the processes currently... (1 Reply)
Discussion started by: shekhar.huded
1 Replies
plimit(1) User Commands plimit(1)
NAME
plimit - get or set the resource limits of running processes
SYNOPSIS
plimit [-km] pid...
plimit {-cdfnstv} soft,hard... pid...
DESCRIPTION
If one or more of the cdfnstv options is specified, plimit sets the soft (current) limit and/or the hard (maximum) limit of the indicated
resource(s) in the processes identified by the process-ID list, pid. Otherwise plimit reports the resource limits of the processes identi-
fied by the process-ID list, pid.
Only the owner of a process or the super-user is permitted either to get or to set the resource limits of a process. Only the super-user
can increase the hard limit.
OPTIONS
The following options are supported:
-k On output, show file sizes in kilobytes (1024 bytes) rather than in 512-byte blocks.
-m On output, show file and memory sizes in megabytes (1024*1024 bytes).
The remainder of the options are used to change specified resource limits. They each accept an argument of the form:
soft,hard
where soft specifies the soft (current) limit and hard specifies the hard (maximum) limit. If the hard limit is not specified, the comma
may be omitted. If the soft limit is an empty string, only the hard limit is set. Each limit is either the literal string unlimited, or a
number, with an optional scaling factor, as follows:
nk n kilobytes
nm n megabytes (minutes for CPU time)
nh n hours (for CPU time only)
mm:ss minutes and seconds (for CPU time only)
The soft limit cannot exceed the hard limit.
-c soft,hard Set core file size limits (default unit is 512-byte blocks).
-d soft,hard Set data segment (heap) size limits (default unit is kilobytes).
-f soft,hard Set file size limits (default unit is 512-byte blocks).
-n soft,hard Set file descriptor limits (no default unit).
-s soft,hard Set stack segment size limits (default unit is kilobytes).
-t soft,hard Set CPU time limits (default unit is seconds).
-v soft,hard Set virtual memory size limits (default unit is kilobytes).
OPERANDS
The following operands are supported.
pid Process ID list.
EXIT STATUS
plimit returns the exit value zero on success, non-zero on failure (such as no such process, permission denied, or invalid option).
FILES
/proc/pid/* process information and control files
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
SEE ALSO
ulimit(1), proc(1), getrlimit(2), setrlimit(2), proc(4), attributes(5),
SunOS 5.10 8 Jun 1998 plimit(1)