In a korn shell script, how can I run several processes in parallel at the same time?
For example, I have 3 processes say p1, p2, p3
if I call them as
p1.ksh
p2.ksh
p3.ksh
they will run after one process finishes. But I want to run them in parallel and want to display "Process p1... (3 Replies)
Hi,
I have a generic FTP script which will be called by 28 different processes in parallel (through a GUI tool) may or may not be at the exact moment (there could be a delay of about a minute or so).
./FTP.ksh 1 (1 through 28)
This script after importing file from remote m/c... (1 Reply)
I've been working on some scripts in which I spawn some background processes. I'd like to be able to limit the number of processes, but have my script spawn additional processes as previous tasks finish. So, let's say I have 20 tasks to complete. Any given task could take from 1 to 10 minutes. ... (7 Replies)
QUESTION: How do I run processes in parallel, so that the counter (in counter.txt) would vary in value (instead of just "0" and "1")? That is, how to not sequentially run inc.sh and dec.sh?
The shared counter (a single number starting as 0) is in a file counter.txt.
counter.sh is (supposed to... (2 Replies)
hey everyone,
I'm having some trouble breaking down some code. It's simple a control script that takes machines meant to be backed up from a list. Then according to that will run multi-threaded processes up until the specified thread limit.
for example if there are 4 machines to be backed up,... (2 Replies)
Hi,
I have a shell script that creates 2 parallel processes. When I press ctrl+c, i want the parallel process to get killed as well.
#!/bin/bash
cmd1="script1.py"
cmd2="script2.py"
${cmd1} &
pid1=$!
echo ${pid1}
${cmd2} &
pid2=$! (7 Replies)
Hi guys,
I am struggling with adapting my script to increase the performance.
I created a ksh script to process a lot of files in parallel.
I would like to know how can I do in such a way that a constant number of processes is always up (until all is finished).
What I have is (not actual... (8 Replies)
Hello,
im having bash script with
while ***
command1 &&
command2 &&
command3 &&
done
i want to ask how i can prevent overloading server, by waiting untill all commands complete? any low resources intensive command like "wait" - i dont know if exist? (2 Replies)
Need some help to replace bash script with parallel to speed up job on multiple files (400files.list is the file contains the absolute path to those 400 files). The bash script is to run the same program over the files repetitively.
My bash_script.sh is:
for sample in `cat 400files.list`; do... (3 Replies)
I am writing a script to kick off a process to gather logs on multiple nodes in parallel using "&". These processes create individual log files. Which I would like to filter and convert in CSV format after they are complete. I am facing following issues:
1. Monitor all Processes parallelly.... (5 Replies)
Discussion started by: shunya
5 Replies
LEARN ABOUT LINUX
ptree
ptree(1)ptree(1)NAME
ptree - print process trees
SYNOPSIS
/usr/bin/ptree [-a] [-c] [-z zone] [pid | user] ...
ptree prints the process trees containing the specified pids or users, with child processes indented from their respective parent pro-
cesses. An argument of all digits is taken to be a process-id, otherwise it is assumed to be a user login name. The default is all pro-
cesses.
The following options are supported:
-a All. Print all processes, including children of process 0.
-c Contracts. Print process contract memberships in addition to parent-child relationships. See process(4). This option
implies the -a option.
-z zone Zones. Print only processes in the specified zone. Each zone ID can be specified as either a zone name or a numerical zone
ID.
This option is only useful when executed in the global zone.
The following operands are supported:
pid Process-id or a list of process-ids. ptree also accepts /proc/nnn as a process-id, so the shell expansion /proc/* can be
used to specify all processes in the system.
user Username or list of usernames. Processes whose effective user IDs match those given are displayed.
Example 1: Using ptree
The following example prints the process tree (including children of process 0) for processes which match the command name ssh:
$ ptree -a `pgrep ssh`
1 /sbin/init
100909 /usr/lib/ssh/sshd
569150 /usr/lib/ssh/sshd
569157 /usr/lib/ssh/sshd
569159 -ksh
569171 bash
569173 /bin/ksh
569193 bash
The following exit values are returned:
0 Successful operation.
non-zero An error has occurred.
/proc/* process files
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
|Interface Stability |See below. |
+-----------------------------+-----------------------------+
The human readable output is Unstable. The options are Evolving.
gcore(1), ldd(1), pargs(1), pgrep(1), pkill(1), plimit(1), pmap(1), preap(1), proc(1), ps(1), ppgsz(1), pwd(1), rlogin(1), time(1),
truss(1), wait(1), fcntl(2), fstat(2), setuid(2), dlopen(3C), signal.h(3HEAD), core(4), proc(4), process(4), attributes(5), zones(5)
11 Oct 2005 ptree(1)