Sponsored Content
Full Discussion: Mach IPC
Top Forums UNIX for Dummies Questions & Answers Mach IPC Post 302473631 by fpmurphy on Sunday 21st of November 2010 11:24:35 PM
Old 11-22-2010
The Mach kernel went though a number of major redesigns between V1 in 1986 (VAX 11/784, IBM PC RT, Sun 3) and v3.0 in 1989 which was the basis for the OSF/1 effort. For example, Mach 2.5 was a large monolithic kernel containing substantial amounts of BSD code whereas Mach 3 on the other hand was closer to a true microkernel. Kernel ports had slightly different capabilities in each version and different terminology was also used at times in the various versions and technical literature.

Perhaps if you gave us a pointer to the tutorial that you have read, somebody on this forum would be prepared to help you. My hunch is that "port name" is actually referring to "capability name" but without seeing the tutorial you are referring to, I cannot be certain.
 

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Ipc

I have a parent that is passing data to child A and then child A has to process it and pass to child B. I am able to pass the data to child A but am not able to pass it to child B. Child B seems to only be receiving the last data instead of the whole data. I saw one example in a book but it uses... (1 Reply)
Discussion started by: scmay
1 Replies

2. Programming

state mach{ne...

hi, I am looking for some info on how can we implement state machines. Conceptually it appears to be good but while implementing it causes lot of confusion.. I have some doubts regarding this concept. (my explanation may look wired, as I am also not clear on this front) The commonly... (2 Replies)
Discussion started by: parasa
2 Replies

3. Programming

[C] Problem with IPC

Hi! I'm trying to write this program: in my intentions it should get a message and send it to a second process (pid_upost), then to a third process (pid1, pid2, pid3, depending on the choice made when a new message is inserted). This program should write the message in a file (message1, message2 or... (1 Reply)
Discussion started by: Kaminski
1 Replies

4. UNIX for Dummies Questions & Answers

Compiling Mach 3.0 Kernel

Hi, I am very new to this. I would like to compile the Mach 3.0 kernel. Can someone explain, step-by-step, how to turn all the Mach 3.0 kernel code into a single binary file that will run directly on an x86 computer? Also, once (and if) I get it working, what software works on it? My goal is... (2 Replies)
Discussion started by: dublinus
2 Replies

5. Shell Programming and Scripting

Help to mach "usb" exactly with sed or awk

HI experts I updated my question here to eg: $cat file ABC: abc ABC FDFD USB: usb usb_name usb_disk usbdriver USB PA: PA pa paa I want to how many usb exactly matched(not match usb_name or usbdriver) in the line cotains"USB:" thanks in advance (19 Replies)
Discussion started by: yanglei_fage
19 Replies

6. Solaris

errors on Netra-440: "IPC Warning: ipc: tcp_protocol: bad magic number"

I was asked to look into a problem with a Sun Netra 440 in another department. On the server in question, the relevant 'uname -a' information is, "SunOS host1 5.9 Generic_118558-16 sun4u sparc SUNW,Netra-440". That information aside, while the other admin is logged into the ALOM, these errors are... (0 Replies)
Discussion started by: Borealis
0 Replies

7. UNIX for Dummies Questions & Answers

Mach drivers

hello everyone, can anyone tell me what drivers the Mach kernel works with. I'm thinking about experimenting with the Mach kernel, and yes I know there are other kernels that are easier to work with but I just want to use the Mach kernel. So with that being said, can the Mach kernel work with... (11 Replies)
Discussion started by: neur0n
11 Replies

8. Shell Programming and Scripting

egrep line with perfect mach

Hi Input File A L006 AL01 0 (OCK) L006 A006 0 (OCK) L011 AR11 1 (NLOCK) Input File B L006 AL01 0 (OCK) L006 A006 0 (OCK) Need Egrep Command for perfect Match Thanks (4 Replies)
Discussion started by: asavaliya
4 Replies
pdfinfo(1)						      General Commands Manual							pdfinfo(1)

NAME
pdfinfo - Portable Document Format (PDF) document information extractor (version 3.00) SYNOPSIS
pdfinfo [options] [PDF-file] DESCRIPTION
Pdfinfo prints the contents of the 'Info' dictionary (plus some other useful information) from a Portable Document Format (PDF) file. The 'Info' dictionary contains the following values: title subject keywords author creator producer creation date modification date In addition, the following information is printed: tagged (yes/no) page count encrypted flag (yes/no) print and copy permissions (if encrypted) page size file size linearized (yes/no) PDF version metadata (only if requested) OPTIONS
-f number Specifies the first page to examine. If multiple pages are requested using the "-f" and "-l" options, the size of each requested page (and, optionally, the bounding boxes for each requested page) are printed. Otherwise, only page one is examined. -l number Specifies the last page to examine. -box Prints the page box bounding boxes: MediaBox, CropBox, BleedBox, TrimBox, and ArtBox. -meta Prints document-level metadata. (This is the "Metadata" stream from the PDF file's Catalog object.) -enc encoding-name Sets the encoding to use for text output. This defaults to "UTF-8". -listenc Lits the available encodings -opw password Specify the owner password for the PDF file. Providing this will bypass all security restrictions. -upw password Specify the user password for the PDF file. -v Print copyright and version information. -h Print usage information. (-help and --help are equivalent.) EXIT CODES
The Xpdf tools use the following exit codes: 0 No error. 1 Error opening a PDF file. 2 Error opening an output file. 3 Error related to PDF permissions. 99 Other error. AUTHOR
The pdfinfo software and documentation are copyright 1996-2004 Glyph & Cog, LLC. SEE ALSO
pdftops(1), pdftotext(1), pdffonts(1), pdftoppm(1), pdfimages(1), 22 January 2004 pdfinfo(1)
All times are GMT -4. The time now is 05:44 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy