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Macros in makefiles may be overridden in the command-line arguments passed to the Make utility. Environment variables are also available as macros. For example, the macro CC is frequently used in makefiles to refer to the location of a C compiler. If used consistently throughout the makefile, then the compiler used can be changed by changing ...
Navigate through the kernel features and menuconfig commands. Esc+Esc: Exit menuconfig or cancel the command. ↵ Enter: Activate a command, or expand a branch. y: Compile and include this feature inside of the kernel. m: Compile this feature as a module, separate from the kernel. n: Do not compile the feature. / Search configuration parameter.
Shell programming Mandatory Shell, the standard command language interpreter Version 7 AT&T UNIX (in earlier versions, sh was either the Thompson shell or the PWB shell) sleep: Shell programming Mandatory Suspend execution for an interval Version 4 AT&T UNIX sort: Text processing Mandatory Sort, merge, or sequence check text files Version 1 AT ...
Compared to Make, Ant uses less platform-specific shell commands. Ant provides built-in functionality that is designed to behave the same on all platforms. For example, in the sample build.xml file above, the clean target deletes the classes directory and everything in it. In a Makefile this would typically be done with the command: rm -rf classes/
Google Shell (goosh) - a UNIX-like front-end for Google Search. Korn shell (ksh), of which there are numerous variations. nsh - "A command-line shell like fish, but POSIX compatible;" available on Arch. [154] osh - "Oil Shell is a Bash-compatible UNIX command-line shell;" available on Arch. Mashey or Programmer's Workbench shell; Qshell for IBM i
Bash shell uses a yacc grammar for parsing the command input. Bison's own grammar parser is generated by Bison. [11] CMake uses several Bison grammars. [12] GCC started out using Bison, but switched to a hand-written recursive-descent parser for C++ in 2004 (version 3.4), [13] and for C and Objective-C in 2006 (version 4.1) [14]
One of the earliest references to a fork concept appeared in A Multiprocessor System Design by Melvin Conway, published in 1962. [1] Conway's paper motivated the implementation by L. Peter Deutsch of fork in the GENIE time-sharing system, where the concept was borrowed by Ken Thompson for its earliest appearance [2] in Research Unix.
A shell script can provide a convenient variation of a system command where special environment settings, command options, or post-processing apply automatically, but in a way that allows the new script to still act as a fully normal Unix command. One example would be to create a version of ls, the command to list files, giving it a shorter ...