expr is a command line utility on Unix and Unix-like operating systems which evaluates an expression and outputs the corresponding value. It first appeared...

applications List of Unix daemons List of web browsers for Unix and Unix-like operating systems Unix philosophy util-linux The Wikibook Guide to UNIX has a page...

Fish (or friendly interactive shell- stylized in lowercase) is a Unix-like shell with a focus on interactivity and usability. Fish is designed to be feature-rich...

Operators are listed in order of decreasing precedence: ( expr ): forces precedence; ! expr: true if expr is false; expr1 expr2 (or expr1 -a expr2: AND. expr2...

Research Unix are early versions of the Unix operating system for DEC PDP-7, PDP-11, VAX and Interdata 7/32 and 8/32 computers, developed in the Bell...

UnxUtils is a collection of ports of common GNU Unix-like utilities to native Win32, with executables only depending on the Microsoft C-runtime msvcrt...

On Unix-like computer systems, seq is a utility for generating a sequence of numbers. seq first appeared on 8th edition Research Unix in 1985, and was...

The Programmer's Workbench (PWB/UNIX) was an early, now discontinued, version of the Unix operating system that had been created in the Bell Labs Computer...

parse tree node with the specified label and children, then the rule expr : expr '+' expr { $$ = node('+', $1, $3); } recognizes summation expressions and...

multiplication and addition of integers. Expr → Expr + Term Expr → Term Term → Term * Factor Term → Factor Factor → "(" Expr ")" Factor → integer The following...

is performed by expr set x 1 set sum [expr {$x + 2 + 3 + 4 + 5}]; # $x is not substituted before passing the parameter to expr; # expr substitutes 1 for...

BusyBox is a software suite that provides several Unix utilities in a single executable file. It runs in a variety of POSIX environments such as Linux...

to affect control flow at the expression level: expr and expr expr && expr expr or expr expr || expr (The "and" and "or" operators are similar to && and...

%left "*" %% input : expr { *expression = $1; } ; expr : expr[L] "+" expr[R] { $$ = createOperation( eADD, $L, $R ); } | expr[L] "*" expr[R] { $$ = createOperation(...

from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. GNU Core...

a metalanguage would be in defining an arithmetic expression: <expr> ::= <term>|<expr><addop><term> The first symbol of an alternative may be the class...

available for other operating systems as well, including VCL and VX/DCL for Unix, VCL for MS-DOS, OS/2 and Windows, PC-DCL and Open DCL for Windows/Linux...

original on 31 March 2023. In StandardForm and InputForm, expr[[spec]] can be input as expr〚spec〛. "Text Leiden+ Documentation". Papyri.info. Archived...

val); } }}; // Decompose multiple `eval`s recursively (eval $e:expr, $(eval $es:expr),+) => {{ calculate! { eval $e } calculate! { $(eval $es),+ } }};...

The C shell (csh or the improved version, tcsh) is a Unix shell created by Bill Joy while he was a graduate student at University of California, Berkeley...

forms of regular expressions were used in Unix programs at Bell Labs in the 1970s, including lex, sed, AWK, and expr, and in other programs such as vi, and...

db2profp declare dirname dot (.) dspmsg echo egrep env eval exec exit export expr extcheck false fgrep file find gencat getconf getjobid getopts grep hash...

operating system to function. Unix-like operating system — operating system that behaves in a manner similar to a Unix system, while not necessarily conforming...

.] ELSE exprDflt END works like if ... else if ... else, whereas a "simple CASE" expression: CASE expr WHEN val1 THEN expr1 [...] ELSE exprDflt END works...

listed in (). For example: expr_gen(ADD[expr_gen(x),expr_gen(y)]) => <AR + (x*16)+y;> releasereg(y); return x; (SUB[expr_gen(x),expr_gen(y)])=> <SR + (x*16)+y;>...

computability theory, undefinedness of an expression is denoted as expr↑, and definedness as expr↓. Defined and undefined (mathematics) Null (SQL) "undef". Perl...

factorial. set counter 5 set factorial 1 while {$counter > 0} { set factorial [expr $factorial * $counter] incr counter -1 } puts $factorial int counter = 5;...

other source code. set foo { while {[incr i]<10} { puts "$i squared is [expr $i*$i]" } } eval $foo bs has an eval function that takes one string argument...

program code to be executed in the event of an error. open FILEHANDLE,MODE[,EXPR] for example: open(my $fh, ">", "output.txt"); Perl also uses the tie function...

(define-syntax let (syntax-rules () ((let ((var expr) ...) body ...) ((lambda (var ...) body ...) expr ...)))) Thus using let as defined above a Scheme...