Proc refers to Procfs filesystem in *nix based operating system.

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What does it mean for /proc/kpagecount to be zero

for some entries in /proc/kpagecount, all the 64 bit entry is zeros and yet the page is allocated (confirmed from /proc/kpageflags). What does it mean for kpagecount to be zero for certain physical ...
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Proc filesystem deprecation?

I heard that the proc file system will be deprecated from the future versions of the Linux kernel. I just submitted a paper that is totally based on the proc file system to one of the highest ranked ...
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Modules in /proc/modules address issue

If I cat of the /proc/modules the RAM address location of modules is always 0x0000000000000000. Any ideas? vmnet 51316 13 - Live 0x0000000000000000 (OX) parport_pc 32701 0 - Live 0x0000000000000000 ...
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25 views

Stat a PID for claim time?

Is it possible to stat a process ID to get the time it was claimed?
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directories under /proc directory

when I tried $ ls /proc ,I found a lot of directories(numbered - for PID and other subdirectories...) as follows : I am describing only some of the numbered subdirectories,and other subdirectories ...
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Files writable under /proc, what's the Purpose?

While exploring /proc directory in root, I find some files are writable, as /proc is pseudo file system, so every time system gets boot, this will come in existence and will be deleted(ie No physical ...
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141 views

Restrict user access to /proc and /sys

I have one big problem: setfacl does not seem to work for /proc and /sys, but I would like to restrict one specific users rights and I do not find it acceptable for that user to read stuff like ...
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204 views

Screen freezes after screen saver when watching fullscreen videos. Disable screensaver when using flash

Update: libflashplayer is installed on my system, firefox just isnt using it.... I discovered this hack-sawing through my root directory with ls -R / | grep libflashplayer I want to disable the ...
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68 views

Lot of “file not found” when using sudo find / -type s

In the attempt to understand why I keep getting the following error error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' while using the command sudo find ...
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writing to /proc/irq/*/smp_affinity as root

Here is the command I issued: root@vishal-Think:~# echo "0" > /proc/irq/0/smp_affinity And here is the error: -bash: echo: write error: Input/output error The ls command shows that root ...
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Restore attributes of deleted file

I'm wondering if it is possible to restore attributes of deleted file (but still opened). Such as date when it was created, permissions, last modification time etc. Recovering deleted file from /proc ...
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726 views

/proc kcore too big

After experiencing a DDOS attack, somehow /proc/kcore is very huge, I use a small php class to check the current disk space, and how many has been used. It shows the following: Total Disk Space: ...
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172 views

Reading device info from inside proc module

I want to read graphic card info in proc module.I created a proc module and loaded it to kernel.What I want is to show graphic card info when I call the proc from terminal. Such as " cat ...
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622 views

Can't change brcm_monitor0 in /proc

I am trying to change the value in the file /proc/brcm_monitor0 from 0 to 1. This file is used to set Broadcom wifi modules into monitor mode. The default method to do this is: sudo -s echo 1 > ...
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2k views

Can't upgrade procps on 12.04

If I'm performing apt-get upgrade I get the following error: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be upgraded: ...
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288 views

How to backup /proc folder with >2000 subfolders and 140TB kcore file?

I found the /proc folder with >2000 subfolders and a kcore data with 140TB. All created at the same time. What is this? All the folders are named from 1 to 2634 and have all 44 subentries... Using ...
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mouse stopped working, checked htop, and HOLY WOW my kcore file is 140 petabytes!! (see screen shot)

My mouse suddenly stopped working on my Ubuntu plex server v12.04 LTS. It still works as a remote plex server so I'm not too concerned. But I did try to login locally with it and ran htop to see if I ...
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5k views

mount:can't read proc/mounts

I've installed Ubuntu, but when it is loading it gives following error: mount:can't read proc/mounts. Can't fount such file or directory However, OS continues loading but when I try to enter system ...
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837 views

ps error /proc must be mounted - but works as root

This is an OpenVZ VPS box. For example: $ ps Error: /proc must be mounted To mount /proc at boot you need an /etc/fstab line like: /proc /proc proc defaults In the meantime, run "mount ...
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319 views

How do I disinfect Ubuntu that is running a virus?

My 12.04 system has just been infected with a virus and it is self-replicating a load of rubbish directories in the /proc/ area. This may crash my computer completely soon. I cannot delete any of ...
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498 views

Having access to buffered videos in ram [closed]

I read that you-tube buffered videos are the in RAM while playing them and you need not download them again. just copy the flash file to another location. However,when I copied it to the home ...
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674 views

what is use of /proc/PID/cpuset

In proc filesystem, what is use of /proc/pid/cpuset. I tried to open this file in each of the process id directories inside the /proc folder. cat /proc/2882/cpuset / Can some one help me to ...
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Not able to understand and map output of /proc/net/tcp

The output of /proc/net/tcp on my ubuntu 12.10 is the following: sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ...
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(/proc/kcore) What is this magical file which can somehow take up 140.7 TB on a 500 GB HDD?

I was cramped for hard drive space, so I was looking for a place where some files might have been duplicated during a restore. The culprit turned out to be root trash, but this stuck out like a sore ...
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703 views

ro root fs on /proc/mounts

my ubuntu 9.10 is mounting the root filesystem as read only. already tried some options found on the forums like fsck, remounts, etc, but no luck... for what I could find, my problem is is ...
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326 views

TCP advertised window in Ubuntu 11.10

I want to increase TCP advertised window beyond 10 packets. I have tried tweaking most of the relevant parameters in /proc/sys/net/ like /proc/sys/net/core/rmem_max, /proc/sys/net/ipv4/tcp_rmem I ...
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397 views

How to start service in a chroot independently of the host system?

I'm using chroot to create ARM Ubuntu installation from Ubuntu Core image. If I mount /proc and /sys all started services intercept with host system (trying to restart dbus is the worst thing it have ...
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144 views

Creation of /proc/stat

Which function of the kernel creates and writes the information for /proc/stat. In this, would like to know when kernel gets the cpu information(recognises number of cpus). If possible can anyone ...
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2k views

Is a /proc mount necessary in /etc/fstab?

This ZFS guide claims: The Ubuntu desktop installer may add dev, proc, sys, or tmp lines to the /etc/fstab file, but such entries are not strictly necessary for a modern system. Add them now if ...
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7k views

I'm getting Fsync failed error. Why?

I tried to change the tcp timestamps in Ec2 instance (which is Ubuntu 12.04). I opened up the editor and changed the value 1 from 0. And when I tried to save the file I get this error: ...
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525 views

cat /proc/filesystems does not list vfat

I'm trying to read an SD card formatted with a FAT32 filesystem. It can be read in windows, but not in Ubuntu. When I tried cat /proc/filesystems, this was the output: > cat /proc/filesystems ...
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362 views

New field in /proc/stat for CPU

Today a application that I have crashed. I went to check why and is because a new field in /proc/stat: cpu 635570 3943 1264332 13562455 65965 80 4806 0 0 0 cpu0 311689 2102 654770 6755602 32431 38 ...
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Exact field meaning of /proc/stat

everyone I need to know the exact meaning of every field in /proc/stat file. I read man proc and it only lists several common fields in various architecture and I find in Ubuntu, it includes several ...
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Automatic Reboot After Power Failure

I want a machine that loses power to automatically reboot when power is available. I've looked around and haven't found a solution that works for 11.04. Purportedly at one point you could do: echo ...
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What's the fairest way to monitor total CPU time - per user?

On a multi user system, I want to measure each user's CPU usage in seconds of cpu time. For the purpose of this measurement, I assume that if a PID belongs to a user, this user is causing the CPU time ...
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4k views

How can I permantly increase the entropy_avail level?

I have noticed so keyboard/mouse hanging and other issues since I bought my new computer and installed Ubuntu 11.10. I researched where increasing the /proc/sys/kernel/random/entropy_avail helps and ...
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902 views

Where can I find current laptop temperature?

I have a script which logs information about my Toshiba laptop, such as its current temperature, and sends that information to Pachube. Recently, I upgraded to Ubuntu 11.11 and the Kernel 3.0 series ...
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884 views

Why is the size of /proc/kcore smaller than RAM? [closed]

I was wondering why it is so. All links (I've found) concerning the size of the file state that the size is about the same as the size of physical RAM, or the size processor can address. I'm on 32bit. ...