I'm trying to get the end result to have the same format as this as well:
1 bin
2 daemon
67 erozner
[code]....
Where the numbers are the number of processes being run by the user (the name right next to it).if I input the command egrep myFile into the terminal, it should look for every line with the letter x in myFile, right?
I would like to do the following: Create a banner for any user logging in through ssh which warns him/her about the number of processors being used already by other users (or conversely the number of free processors). For example, if a user logged in he would then see a message like: Warning! 7 out of 8 processors are in use.I already figured out how to do a banner and with ps -e -o pcpu I can get all processes' %CPU usage. I think I would like to count the number of processes which have more than 90% CPU usage and output this number ("7" in the example) in the banner
View 7 Replies View RelatedAre there any tools to view/edit user space memory of running processes on Linux?
It would be a great learning tool.
Why does unix ps -l whows one number in column "PRI" but in same time ps -o pri shows another number? cpu and nice are zero for those processes
View 1 Replies View RelatedI have something like:cd project && python manage.py runserver &cd utilities && ./coffee_auto_compiler.pyAnd I want both of them to close on Ctrl-C (or some other command). How can I accomplish that?EDIT:I tried using jobs -x kill and kill `jobs -p `, but it doesn't seem to kill what I need. Here is what I mean:oon 8119 0.0 0.0 7556 3008 pts/0 S 13:17 0:00 /bin/bashmoon 8120 6.8 0.4 24568 18928 pts/0 S 13:17 0:00 python manage.py runserverjobs -p give me just process 8119, but I also need to close 8120, since it's the thing that the first command opened.If it helps, the commands are actually in a Makefile, and I want it to run two daemons at the same time (and somehow close them at the same time).
View 3 Replies View RelatedWhat I need is, given a process id, list all his children without any clutter (table header, other columns than the pid) What I have is :
ps h --ppid $PID Which gives me:
26277 pts/13 S+ 0:10 cmd1
26280 pts/13 S+ 0:10 cmd2
Using h allow me to hide the table header. Is there a way to tell ps to not print the pts/13 S+ 0:10 cmd part in order to get a list of children process ids separated by carriage return?
is there any possible way to hide currently running processes from an user? This means I do not want him to know about what programs/processes does any other user but him run. In short words if that user runs 'ps -aux' he should get only his processes.
View 3 Replies View Relatedulimit -a tells me I have a limit of 1024 open files, which is the default on my distro. Is there a way to show how many of these are currently used, or how many are remaining?
View 1 Replies View RelatedOptimum number of processes for procesor In Linux based os are there a optimum number of process for a processor that gives 'maximum performance' for system(or process range depend on cpu speed,cache etc...)? By 'maximum performance' I mean better performance?
View 5 Replies View Related# echo "foobar" > /tmp/word
# cat /tmp/word | wc -m
7
I want to print the number of characters in the file. Why does it output 7? Am I missing something obvious?
manpage:
-m, --chars
print the character counts
GNU/linux kernel 2.6, Slackware 12.0.Hi:How do I know what processes are running?
View 6 Replies View RelatedI list all the instances of a running process my doing:ps -ef | grep myprogramThis lists all them.how can I simply output a count of how many are running?
View 2 Replies View RelatedWhen i do the following with logged in with root:
Code:
i get
Code:
When i login with user1 and do ulimit -a
i get
Code:
Why is the max user processes different for the same user? And how can i change this. I need for this user more then 20 processes...
Is there any unix command to list services running on remote unix box.
View 6 Replies View RelatedI am studying for the LPIC-1 exam, and reading a book that they recommend: "Introduction to Linux: A Hands-on Guide", by Machtelt Garrels. There's one question on the 4th chapter (Processes), that I found confusing: Question: Based on process entries in /proc, owned by your UID, how would you work to find out which processes these actually represent?
What does he mean? If I run the command (considering that my username is sl33p):
Code:
$ps -u sl33p
...gives me the right answer?
The ps man page says:
-u userlist
Select by effective user ID (EUID) or name.
This selects the processes whose effective user name or ID is in userlist. The effective user ID describes the user whose file access permissions are used by the process (see geteuid(2)). Identical to U and --user.
Unix command that allows to know which process is running on processor core?
View 2 Replies View RelatedThe command used to view processes running on the Linux machine is?
View 8 Replies View Relatedhow to write a shell script the searches for processes running on my system. I really don't know where to start. can anyone give me a hand and explain how the script works?
View 3 Replies View RelatedI know the 'history' command give me a list of the commands I have typed into the Unix terminal.
How do I see the command history for all of the users currently logged onto the system?
It should not have any /home/. It only can access a folder and that folder is home default for this account.
Details about my usage: We have a simple folder which contains demo code and we want to create a user to read this folder only
How to Look at history file in unix shell for a user, find 5 most often used commands.
View 5 Replies View RelatedHow to check quota of a user in UNIX/Linux?
View 2 Replies View Relateduser@host$ killall -9 -u user Will it definitely kill all processes owned by user (including forkbombs)?
No new processes is spawned to user from other users. No user's processes are in D-sleep and unkillable.No processes are trying to detect and ptrace or terminate this started killall (but they can ptrace or do other things with each other) There is ulimit that prevents too much processes (but killall is already started and allocated it's memory)
E.g. if killall will finish untampered and successfully is it 100% that no processes are left with this uid? If no, how to do it properly (with standard commands and no root access). Will SysRq+I definitely kill all things (even replicating)?
All the kill idle user processes scripts I've seen don't take into account that the user might have multiple sessions open. Such is the case with one of our clients. Currently, every hour or two I need to do the following:
This will get the TTY and idle time for all users.
For each idle time over a half hour, I do the following (TTY is the TTY from the previous command with a space.
I then kill those processes.
There must be a way to do this automatically in a bash or perl script. I've tried both, but can't seem to get things to work properly.
how to list the currently running processes via code a shell script. FYI i now about the top method in the terminal but i need a way to have it via a shell script.
View 4 Replies View RelatedI would like to give a non-root user (nicollet) the ability to detect and send a signal to processes started by Apache2 (those processes are FastCGI scripts and the signal tells them to empty their cache). The processes are owned by the web user (www-data), and I'm running on Debian unstable.
I can't find any way to have the nicollet user see those processes.
The processes are running and can see by both root and www-data:
root@linux-01:~# ps -Af | grep baryton
www-data 17649 17648 0 10:27 ? 00:00:00 baryton
www-data 28145 1 0 Nov01 ? 00:00:12 baryton --bot
root 18701 18700 0 10:46 pts/0 00:00:00 grep baryton
root@linux-01:~#
[Code]....
The most surprising is that the grep process is indeed run by www-data (because it's started from a setuid executable) and is visible, but the baryton process isn't.
What's going on here? Why can ps run by www-data show those processes, but ps run by a setuid executable running as www-data cannot, when it's started by nicollet?
Few days ago, the server did not respond to a ssh request from a user at night. A user tried to check what went wrong with computer and tried to login from terminal next morning. As the computer was unresponsive, he somehow decided to boot it by turning the power off. To make the story short, the server rebooted; however, he can't login to his account. Actually, the server could not start some processes; but was able to ask user to enter his account username. Even though, he enters the correct username and password, server does not accept the request. I also could not login as root.
I just checked the server logs by booting it in single user mode. Here are some interesting lines:
Before the reboot:
irqbalance : can't balance irqs on a uniprocessor system: failed
After the reboot:
irqbalance : can't balance irqs on a uniprocessor system: failed
fsck:
fsck /: (this is repeated 900+ times)
[code]....
Normally all I/O goes through the kernel so that it can schedule the operations and prevent processes from stepping on each other. A few special user processes are allowed to slide around the kernel, usually by being given direct access to I/O ports. X servers are the most common example of this isn't it ? give examples for any other processes that are allowed to slide around the kernel ?
View 3 Replies View RelatedCode...
I don't know how to increase the number of url_rewriter processes.
I'm in the process of writing a program that is a server- it will accept connections and stuff, and spawn a child process for each. However, i've run into a small problem. I do NOT want to bother with keeping track of the processes unless i need to. So, i set SA_NOCLDWAIT (#ifdef) on a SIG_IGN to the SIGCHLD handler through sigaction interface. The standard says that it the kernel will then keep track of reaping zombie processes for me (a HUGE plus). However, upon receiving a SIGINT signal, i want to stop the server from accepting new connections (done), and then wait for there to be no new connections. I was thinking of just putting a loop like so:
Code:
while((wait(NULL) != (pid_t)-1) && errno != ECHILD);
However, I'm not *sure* that this will work, especially with SIGCHLD still ignored. So how can i tell if there are still child processes? I can't find any call like int getnumchld(pid_t proc); (i wish). Plus it would be inefficient to spin on that function anyway. OTOH, i would rather *NOT* have to do the same thing in a loop with a system("ps |...>file"); read(file); etc. either. Is there a way i can portably implement this feature (I was hoping i could run it on linux and the major BSDs, at least).
TO SUM IT UP:
How can i tell if a process has no child processes if i've SIG_IGN'd SA_NOCLDWAIT'd the SIGCHLD? Is there a _reasonably_ portable way to do so? I *don't* want to manually wait for EVERY process. Maybe only those still active at the time of SIGTERM, but that requires keeping track of the number of connections and whether those have terminated...
EDIT: Does anyone know if the above code *would* work, even with SIGCHLD ignored and the kernel cleaning up zombies *for* me? I checked the manpage and it doesn't say much.
EDIT1: Note that all of the processes are in the same process group and session. SO i can find them through this as well. Perhaps even setting the uid/gid and finding all processes run by that group?
EDIT2: i have an idea if the above isn't feasible. If there is no "elegant" way to do it, i could reduce the complexity by sending a SIGUSR1 to the whole process group. Each process would then set a flag telling it to send a SIGUSR1 in reply and send a SIGUSR2 when it is done executing. Then i could keep a count of signals. Maybe that would be *easier*. Or perhaps a count of all child processes and just a termination signal to decrement the counter.