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Questions tagged [qnx]

QNX is a proprietary, real-time UNIX-like operating system used in embedded systems.

36 questions
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What does //1/ mean

QNX4 operating system using Korn Shell. This is in a .profile file. export VARDIR=//1/usr/pvcs What does the //1/ represent?
Kevin Eisinger
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4 answers

What is the Unix (QNX) equivalent of Windows command line "dir /s /b"

The question What is the Linux equivalent of DOS “dir /s /b filename”? comes close but it winds up playing a file find operation for all such named file names. I'm however looking to do a directory contents diff comparison with a directory on a…
jxramos
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7
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1 answer

/usr/bin/random using a lot of CPU

Using QNX 6.4.1, there is a command called pidin times that shows information about processes. I think it means PID INformation. Among other things, you can see how much CPU a process has used since it was started. I have a system that is showing…
kmort
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6
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1 answer

QEMU more than 4 serial ports

I have 5 diferent serial devices that are connected to physical serial ports on debian stretch computer and internally should be forwarded to QEMU machine. Inside qemu is QNX 6.5.0 system, so i am not sure if i can use virtio-seral drivers or…
MetNP
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3 answers

How similar are Android and QNX?

The root of the question is really: "Can you run the Android OS on a BlackBerry PlayBook?" Since one is a Linux derivative and the other is a Unix derivative, it seems a natural fit for here.
repguy2020
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5
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184 environment variables too many?

I am trying to find the cause of some OS wonkiness, and am concerned about environment variables. The software I have been handed puts an incredibly high amount of environment variables into the user's .profile. When I type set | wc the result is…
kmort
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1 answer

What happens to files in mountpoint after running fs-cifs to mount NAS?

I'm running QNX Neutrino. I've got some files in /mountpoint: # ls /mountpoint /mountpoint/a /mountpoint/b And after mounting my NAS using fs-cifs like so, # fs-cifs //hostname:hostipaddress:/sharename /mountpoint login password & I see the…
Alex L
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4
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Other reasons for "no space left on device" than fully used folder?

I have a tests that I run on a device which has a 300M of ram-disk based /tmp and I get "no space left on device" even though when I run df -h I find that only 11% of the /tmp is actually used. I am very confused, any hints on what should I look…
Bionix1441
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Measure hard-disk read(), write() speed without caching in QNX 6.5

I am working on QNX 6.5 Operating system. QNX 6.5 supports POSIX APIs. I am trying to build an application which is used to evaluate performance of hard-disks. My application will read/write/read after write a user defined data buffer of size in kB…
Honey Sukesan
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3 answers

Interactive command usage reference: do you generally have that on Unix?

The question of why some commands rely on manpages whereas others rely on something like the --help flag for providing command usage reference is not new. There is usually a difference in scope between documentation for a command and a command usage…
user44370
3
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1 answer

ldd:FATAL: Unresolved symbol "getopt_long" called from Executable - using compiled binaries for QNX on arm. Why?

The Blackberry Playbook has formally reached EOL(april 2014), but I've installed BGShell, BGSSH-SCP-SFTP, and Term48 on it. So I have some ksh-like shell it seems with things like GNU awk 3.1.5, sed 4.1.5, grep and python, with some other coreutils…
user44370
2
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1 answer

'ps' command hangs

A coworker ran into this issue twice and I don't know what's wrong. His ps command hangs, taking about 25% of the CPU. in_progress=1 sleep 10 while [ "$in_progress" -eq 1 ]; do num_isp=`ps -e | grep isputility | grep -v grep | wc…
kmort
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Alternative to xxd for QNX

I was just introduced to xxd today. See link. I am very familiar with the QNX hd and odcommands, both of which will take input and create a hex dump (or octal dump if you like). See hd and od. What I am looking for is the xxd -r capability to go…
kmort
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Is there any specific steps for configuring protobuf in QNX?

We have tried to configure using ./configure command. An error is like no c++11 compiler support. We are following the steps ie mentioned in some blog. We want to know like is there any other specific steps for this?
Priyanka
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What does "mount -e " do?

TL;DR: What does mount -e do? Overview Over ssh, mount commands are being sent by software that I need to maintain. Twice, the mount commands use an -e option. I don't know what -e is for and can't find a good enough answer. Details In my…
Aaron
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