By Warren W Gay
Complex UNIX Programming is going past the basics of UNIX programming and provides info and strategies the readers must extend their wisdom base. Designed for pro UNIX programmers, this e-book builds at the talents and data the reader already possesses. It comprises assurance of web methods, interprocess keep watch over, dossier approach manipulation, synchronization, and masses extra.
Read or Download Advanced UNIX Programming PDF
Similar unix books
Firefox Hacks is perfect for energy clients who are looking to maximize the effectiveness of Firefox, the next-generation net browser that's speedy gaining in reputation. This highly-focused ebook bargains the entire worthy counsel and instruments you want to take pleasure in a high-quality and more secure shopping adventure. customise its deployment, visual appeal, good points, and performance.
Linux Routing explains and demonstrates routing recommendations for universal community varieties, specifically LANs, WANs, and VPNs, utilizing a variety of kinds of undefined, after which explores the internal workings of the daemons and instructions used for routing in Linux. the second one half the e-book revolves round really good matters.
The FreeBSD newcomer will locate that the 1st component of this booklet courses the consumer during the FreeBSD install method and lightly introduces the strategies and conventions that underpin UNIX. operating via this part calls for little greater than the will to discover, and the power to tackle board new innovations as they're brought.
Any software worthy its salt makes use of working approach prone. Even an easy software, if functional, reads enter and produces output. And, so much functions have extra complicated wishes. they should discover the time, use the community, or commence and speak with different procedures. platforms programming quite capability not anything greater than writing software program that makes use of those working approach prone.
Extra resources for Advanced UNIX Programming
H. h> Using symbolic macro references for error codes is important, since it allows your C programs to be portable to other UNIX platforms. Only a compile is required to reference the correct numeric value for these codes on a given platform. UNIX errno codes are non-zero values and usually start at 1 and work up. Zero is sometimes used to indicate "no error" (this convention is used in rare cases with the functions strtol(3), strtoul(3), and strtod(3), for example). Applying errno Correctly There is a temptation for novice programmers to use the errno value to test for success.
H>. You should no longer declare it as an external integer variable. h> include file will define errno in a manner that is appropriate for your specific UNIX platform. This also defines the errno macro constants for the error codes. Using the New errno Variable Once variable errno is appropriately declared for your platform, you can still use it as you did before. For example int saved_errno; saved_errno = errno; printf("errno = %d\n",errno); errno = ENOENT; errno = 0; /* /* /* /* Saving errno */ Inspecting errno */ Changing errno */ Clearing errno to zero */ You can obtain value of errno and change its value, just as before its definition changed.
Access of Regular Files This is perhaps the simplest case to consider. Files can be controlled by • • • Read access Write access Execute access These are relatively simple concepts. However, a couple of interesting combinations exist: • • A file that has read and execute access A file that has execute-only access The first case is necessary for shell scripts. /bin/ksh hack, the UNIX kernel insists that the execute permission be given on the shell script. Additionally, the shell itself must interpret the file, so it must access enough to read the script.
Advanced UNIX Programming by Warren W Gay