I'm learning python and perl and i was trying to run from python a perl script using the subprocess module.
I have an issue that i don't understand regarding this.
I run this code:
First part : run grep, works as expected, i can get the ouput and display it.
The second one, when i actually want to run the perl script and get the output throws me an error :
I don't understand why this happens since the code is similar. Can someone enlight me?
Thanks,
Ionut
Last edited by capitanui; 10-23-2013 at 08:36 AM..
Reason: Solved - Wrong spelling .. didn't saw it
I am writing a shell script that executes another script by fetching it over the network and piping its contents into sh (ftp -o - $script | sh; or wget -O - |sh). Since this bypasses putting the script on the filesystem, this means I can't source the script directly (using . ), but rather it... (1 Reply)
Hi All
Here i have a piece of code,
set filename "./GopiRun.sh"
#I need to wait here until the GopiRun.sh is completed how do i achive this
exit. (1 Reply)
Hi,
I am having a trivial doubt. Please see the below pipeline code sequence.
command1 | (command 2; commend 3)
I am aware that the command that follows pipe will run in the sub shell by the Unix kernel. But how about here? Since these set of commands are grouped under "parantheses", will... (6 Replies)
Hi Guys,
Just a question about subprocesses.. Lately one of our servers has started to throw out the following error:
SYSTEM ERROR: Too many subprocesses, cannot fork. Errno=12
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Hi,
I am trying to run a shell script using subprocess in python.
I can run simple script with arguments using subprocess.But I am not able to embed xterm in subrocess command.
#!/usr/bin/python
import subprocess
subprocess.call()
Above code gives me error.
Please help me in... (2 Replies)
After struggling with this for days now, I'm reaching out to the experts of all things linux for some help with this.
I'm trying to run the following working command (on command line) inside a python script using subprocess:
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So I have this basic script, see below
import subprocess
import shlex
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subprocess.check_output(shlex.split(command))
subprocess.check_call(shlex.split(command))
The subprocess.check_call(shlex.split(command)) actually return what I expect. It returns... (6 Replies)
Discussion started by: scj2012
6 Replies
LEARN ABOUT DEBIAN
crashme
CRASHME(1) General Commands Manual CRASHME(1)NAME
crashme - test operating environment software robustness
SYNOPSIS
crashme [NBYTES] [SRAND] [NTRYS] [NSUB] [VERBOSE]
DESCRIPTION
crashme is a very simple program that tests the operating environment's robustness by invoking random data as if it were a procedure. The
standard signals are caught and handled with a setjmp back to a loop which will try again to produce a fault by executing random data. Some
people call this stress testing.
COMMAND LINE OPTIONS
[NBYTES]
The [NBYTES] should be an integer, specifying the size of the random data string in bytes. If given negative then the bytes are
printed instead of being executed. If given with an explicit plus sign then the storage for the bytes is freshly malloc'ed each
time. This can have an effect on machines with seperate I and D cache mechanisms. The argument can also have a dot in it, X.Y, in
which case Y is a increment for a pointer into the random data. The buffer is recalculated only when the pointer gets near the end
of the data.
[SRAND] The [SRAND] is an input seed to the random number generator, passed to srand.
[NTRIES]
The [NTRIES] is how many times to loop before exiting normally from the program.
[NSUB] The [NSUB] is optional, the number of vfork subprocesses running all at once. If negative run one after another. If given as a
time hrs:mns:scs (hours, minutes, seconds) then one subprocess will be run to completion, followed by another, until the time limit
has been reached. If this argument is given as the empty string or . then it is ignored.
When in sequential-subprocess mode there is a 30 second time limit on each subprocess. This is to allow the instruction-set-space
random walk to continue when a process bashes itself into an infinite loop. For example, the ntrys can be bashed to a very large
number with nbytes bashed to zero. (10 second limit on Windows NT).
The SRAND argument is incremented by one for each subprocess.
[VERBOSE]
The [VERBOSE] arg is optional. 0 is the least verbose, 5 the most.
EXAMPLE
This is a suggested test, to run it for a least an hour.
crashme +2000 666 100 1:00:00
FILES
crashme.c
DIAGNOSTICS
When a signal is caught the number and nature of the signal is indicated. Setting the environment variable CRASHLOG will cause each sub-
process to record the arguments it was given.
BUGS
Not all signals are caught, and the state of the user program/process enviroment can be sufficiently damaged such that the program termi-
nates before going through all [NTRIES] operations.
If the architecture uses some kind of procedure descriptor but no special code has been not been added to castaway() in crashme.c then the
stress test will not be as potent as it would otherwise be.
Beware: This program can crash your computer if the operating system or hardware of same is buggy. User data may be lost.
AUTHOR
George J Carrette. GJC@world.std.com
VERSION
2.4 20-MAY-1994
LOCAL CRASHME(1)