The process-management tag has no wiki summary.
4
votes
1answer
45 views
Understanding when background process gets terminated
I have a script which starts a number of background processes and if works fine when called from the cmdline.
However the same script is also called during my xsession startup and additionally on ...
3
votes
1answer
48 views
A script's background process is still alive after closing the terminal
This is more of a process management/signal handling question than a Bash question. It just uses Bash to explain the issue.
I'm running a Bash script in which I run a background process.
This is the ...
2
votes
2answers
65 views
End process from another SSH window
I forgot to use screen and I have a task that has been running for quite some time, and I do not want to lose the saved data. Basically Ctrlc will end the task and save the data if I am on the same ...
11
votes
4answers
277 views
Is there a top-like command that shows the network bandwidths and file accesses of running processes
For example, we'd like to see:
PROCESS IF TX RX FILE(regular) R/W
prog1 eth0 200kB/s 12kB/s -- --
wlan0 12kB/s 100kB/s -- ...
1
vote
2answers
146 views
multiple background processes in a script
Suppose if i have a situation in which some files need to be copied and it takes long time so
i would have to go for parallel processing of the file copy.
for example it may look like this
for i in ...
14
votes
2answers
440 views
How are the processes in UNIX numbered?
I can't find any pattern when I look at the numbering of PIDs in process table (ps -a), as the PIDs are not subsequent numbers and sometimes there are large "gaps" between those numbers.
Is it ...
1
vote
1answer
89 views
Managing the output streams of many subprocesses with deadlocks
I have a Python script that does more or less this
current_tasks = TaskManager()
MAXPROCS = 8
while len(outstanding_tasks) > 0:
if len(current_tasks.running) < MAXPROCS:
...
1
vote
2answers
105 views
Host process for multiple processes?
I am maintaining an application that currently consists of 4 processes that are dependant on each other in various ways. At the moment these processes are started, stopped and monitored via a rather ...
4
votes
1answer
68 views
How can I synchronize processes started in different TMUX panes?
Consider this:
tmux split-window -d program1
program2 # this program depends on some side effects produced by program1
In this case, program2 will start before program1 is ready. program1 will send ...
4
votes
1answer
190 views
What does <defunct> mean in the output of ps?
I had issued the ps -ef|grep java command and this is one of the entries that I got :
subhrcho 875 803 0 Jan23 pts/5 00:02:27 [java] <defunct>
What is <defunct> implying here ? ...
3
votes
1answer
125 views
What is the difference between exiting a process via Ctrl+C vs issuing a kill -9 command?
I know I can kill any process with kill -9 command . But sometimes i see that even if I have terminated a program with CTRL+C , the process doesn't get killed . So I want to know the difference ...
0
votes
3answers
214 views
What is the difference between ps and top command?
What is the difference between ps and top command ? I see that both can display information about running processes . Which one should be used when ?
1
vote
3answers
148 views
What happens to suspended jobs in unix?
We can issue CTRL+Z to suspend any jobs in Unix and then later on bring them back to life using fg or bg. I want to understand what happens to those jobs that are suspended like this ? Are they ...
1
vote
1answer
71 views
How to ensure a process has started reading a file before continuing?
I'm trying to write a command to test that data is written to a file. My first approach was:
Start reading in the background.
Write some data to the file.
Wait for the reader to find a result.
...
0
votes
0answers
88 views
Very large values for utime and stime for foo. Is foo still running?
I am running a program foo
It has been running for close to 30 days now (even more)
Until around 10 days ago (I cannot be very exact) it used 100% of one cpu on my dual core laptop (it was at the ...
