http://snippets.dzone.com/posts Sun, 12 Oct 2008 03:57:15 GMT DZone Snippets: scripting code http://snippets.dzone.com/posts/show/5611 # servers.sh <br />export MAILSERVERS="server1 server2 server3" <br />export WEBSERVERS="www1 www2 www3 www4" <br /> <br />#!/bin/bash <br />### Assess disk space on mail servers <br />source ./servers.sh <br />for i in ${MAILSERVERS} ; do <br /> echo =========${i} ============= <br /> ssh root@${i} "df" <br /> echo ============ ============= <br />done <br /> <br /># min hour dom month dow command <br /> <br />grep “###” * Sat, 07 Jun 2008 14:43:51 GMT http://snippets.dzone.com/posts/show/5611 shantanuo (shantanu oak) http://snippets.dzone.com/posts/show/5188 The eval method in Ruby executes the code from within a string. <br /><code> <br />eval("puts 'Hello World'") <br /></code> <br />output: <br /><code> <br />Hello World <br /></code> Fri, 29 Feb 2008 13:53:58 GMT http://snippets.dzone.com/posts/show/5188 jrobertson (James Robertson) http://snippets.dzone.com/posts/show/2666 El codigo es una implementacion de un lenguaje de scripting sin lenguaje, por lo tanto queda limitado a la interpretacion de codigos por lo que se parece mas a una maquina virtual <br /> <br /><code> <br />#include <stdio.h> <br /> <br /> <br />typedef struct _operation{ <br /> unsigned int op; <br /> int arg1; <br /> int arg2; <br /> int arg3; <br />} operation; <br /> <br />typedef struct _scriptEngine{ <br /> int var[255]; <br /> int ip; <br /> int halt; <br /> operation code[255]; <br />} scriptEngine; <br /> <br />void operation_run(const operation *p, scriptEngine *s){ <br /> switch (p->op){ <br /> case 0: //add <br /> s->var[p->arg1] = s->var[p->arg2]+s->var[p->arg3]; <br /> s->ip++; <br /> printf("Realizando suma\n"); <br /> break; <br /> case 1: //sup <br /> s->var[p->arg1] = s->var[p->arg2]-s->var[p->arg3]; <br /> s->ip++; <br /> printf("Realizando resta\n"); <br /> break; <br /> case 3: //mul <br /> s->var[p->arg1] = s->var[p->arg2]*s->var[p->arg3]; <br /> s->ip++; <br /> printf("Realizando multiplicacion\n"); <br /> break; <br /> case 4: //div <br /> s->var[p->arg1] = s->var[p->arg2]/s->var[p->arg3]; <br /> s->ip++; <br /> printf("Realizando division\n"); <br /> break; <br /> case 5: //mod <br /> s->var[p->arg1] = s->var[p->arg2]%s->var[p->arg3]; <br /> s->ip++; <br /> printf("Realizando modulo\n"); <br /> break; <br /> case 6: //set <br /> s->var[p->arg1] = p->arg2; <br /> s->ip++; <br /> printf("Realizando asignacion\n"); <br /> break; <br /> case 7: //halt <br /> s->halt=1; <br /> break; <br /> case 8: //jump <br /> s->ip=s->var[p->arg1]; <br /> break; <br /> default: <br /> break; <br /> } <br /> <br />} <br /> <br />scriptEngine* scriptEngine_new(){ <br /> scriptEngine *new_script; <br /> new_script = (scriptEngine*) malloc(sizeof(scriptEngine)); <br /> new_script->ip=0; <br /> new_script->halt=0; <br /> return new_script; <br />} <br /> <br />void scriptEngine_delete(scriptEngine *script){ <br /> free(script); <br />} <br /> <br /> <br />void scriptEngine_run(scriptEngine *script){ <br /> <br /> int j; <br /> <br /> while(script->halt==0){ <br /> printf("Inicio de operacion\n"); <br /> operation_run(&(script->code[script->ip]),script); <br /> printf("Estado de la maquina:\n"); <br /> for (j=0;j<5;j++){ <br /> printf("Posicion de la memoria %i: %i\n",j,script->var[j]); <br /> } <br /> } <br />}; <br /> <br />void scriptEngine_create_example(scriptEngine *script, int example){ <br /> switch (example){ <br /> case 0: <br /> script->code[0].op=6; //set <br /> script->code[0].arg1=0; <br /> script->code[0].arg2=10; <br /> <br /> script->code[1].op=6; //set <br /> script->code[1].arg1=1; <br /> script->code[1].arg2=20; <br /> <br /> script->code[2].op=0; //set <br /> script->code[2].arg1=2; <br /> script->code[2].arg2=0; <br /> script->code[2].arg3=1; <br /> <br /> script->code[3].op=7; <br /> break; <br /> } <br />} <br /> <br />int main(int argc, char **argv){ <br /> <br /> scriptEngine* script; <br /> script = scriptEngine_new(); <br /> scriptEngine_create_example(script,0); <br /> scriptEngine_run(script); <br /> scriptEngine_delete(script); <br /> <br /> system("PAUSE"); <br /> return 0; <br />} <br /> <br /> <br /></code> Fri, 22 Sep 2006 20:52:09 GMT http://snippets.dzone.com/posts/show/2666 jcongote (John Edgar Congote Calle)