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Questions tagged [bsd]

BSD is a family of Unix-like operating systems, including FreeBSD, NetBSD and OpenBSD.

510 questions
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restriction on using #define'd functions/inline functions inside Assembly files

Is there any restriction on using #define'd functions/inline functions inside Assembly files. I referred bsd kernel in which two different implementations are defined. One is macro and other is a normal function ( both are for same function) In the…
kumar
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Why does backgrounding `script` from a makefile drastically increase cpu usage?

First a little bit of context: I'm calling this is inside a shell script that's called from make that's executed concurrently with make -j4. I have not found any reliable way to atomically write to stdout so I backgrounded the process and found it…
vmrob
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why the return value from recvfrom method is 4294967295 which should be 0 or -1?

I am using sendto/recvfrom methods to send/receive UDP packets in my app. Now my receive method is as following: - (void)listenForPackets { int listeningSocket = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); if (listeningSocket <= 0) { …
chancyWu
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Sockets behavior differently between BSD (Mac OS X and OpenBSD) and Linux (Ubuntu)

I wrote a man-in-the-middle/proxy server initially on my mac. Essentially the proxy creates a socket and waits for a connection, then connects to another application. This works flawlessly on in OS X and in OpenBSD; however, when porting the proxy…
jbh
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How do I use sed to replace all lines between two matching patterns (on OSX BSD)

I would like to know how to: Replace all lines between two matching patterns (not include the patterns - exclusive). Please note that these will be on separate lines. Replace all lines between and including two matching patterns (inclusive). Please…
vsiege
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BSD hard disk designation

I have a hard disk array which runs on an OS based on BSD. I want to acces some hard disk information on it directly but I cant seem to figure out what the hard drives are. In linux it would /dev/sda,/dev/sdb etc. here is an output from a ls in…
user3021085
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Mac unix script: given a list of file paths, find the one with latest modified date?

If I have a list of file names (absolute path), how do I determine which one is last modified in command line? Thanks!
hzxu
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Bash shell / Command: strip out arbitrary components in a given path?

Say if I have: MYPATH=../Library/NetworkUtil/Classes/Headers/network.h then I want to construct another path AllHeaders/NetworkUtil/network.h I actually need to get different components out fro the original path, is there a way to do it? I found…
hzxu
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unix command to copy all .h file with modified directory-structure

Suppose I have a folder structure like: Libraries\ UIToolkit\ files\ toolkit.h toolkit.c toolkit.resource NetworkLayer\ files\ network.h network-info.txt ... I need a command so that I can input the Libraries folder and specify a Output…
hzxu
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Script to find all .h file and put in specified folder with same structure?

I need a bash script like headers ~/headers-folder ~/output-folder so it recursively finds all .h files in ~/headers-folder and put them all in ~/output-folder with the folder hierarchy maintained? Thanks!
hzxu
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Reading from a socket at an offset with MSG_PEEK flag?

I want to get away from the sequential and slow way of reading from a socket, in which we use: struct PACKET_STRUCT{ int PacketType; char buffer[50]; }; char buffer[sizeof(PACKET_STRUCT)]; struct sockaddr_storage addr; socklen_t fromlen =…
Lucky
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Is the comm command broken on Mac?

Suppose there are file1: 1 2 3 5 And file2: 2 3 4 When comparing them with comm file1 file2 on FreeBSD or Linux, I got the following result: 1 2 3 4 5 But when I tried the same command on Mac OSX 10.9, the…
Domon
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syslog: process specific priority

I have two user processes A and B. Both use syslog using facility LOG_USER. I want to have different threshold levels for them: For A, only messages of priority ERR-and-above must be logged For B, only messages of priority CRIT-and-above must be…
Arun
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Unusual signal numbers from WTERMSIG macro after waitpid()

I am seeing unusual signal numbers (for example 50, 80 or 117) from the following code when waiting for a child process to terminate. I am only seeing this from one particular child process, and I have no access to the process source code and it…
trojanfoe
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Using globs in GNU grep's path argument

BSD (Mac) grep allows for this command: grep -n "FIXME" **/*.rb But GNU grep forces me to specify at least a folder to start from: grep -n "FIXME" {lib,spec}/**/*.rb Is there a way to get this to behave like it does in BSD grep?
yurisich
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