commands1 else if (expression2) then commands2 else commands3 endif 含义:当expression1的条件为True时,shell执行then后面的commands1命令;当 expression1的条件为false并且expression2的条件满足为True时,shell执行 commands2命令;当expression1和expressin2的条件值同为false时,shell执行 commands3命令.if语句以他的...
test 命令尽管不是 shell 的一部分,但意图由 shell 程序使用。例如, test -f file 1. 译注: 在当前版本的 shell 工具中,有一个与 test 等同的命令 [,它接受与 test 一样的实际参数,但要求在实际参数列表的最后附加一个 ] 作为实际参数。上面的例子也可以写成 [ -f file ] 1. 如果file 存在则返回零退...
英语缩写“sh”在技术中常被用作“Shell”的缩写，中文含义即“壳牌”。本文将深入解析这个缩写词，包括其英文原词“Shell”，中文拼音“ké pái”，以及它在英语中的广泛使用程度，达到了211的流行度。在缩写词分类上，它属于Computing领域，主要用于Unix Commands中。“sh”这个缩写在中文中对应的是“...
//Filter commands for extra Spacesint argc=0,len,i;while(cmd[i]==' ')i++;//Remove the leading spaceargv[argc++]=cmd+i;//first position of spacefor(len=strlen(cmd),i=0;i<len;i++){if(cmd[i]==' ')cmd[i]=0;else{//Fill in the command parametersif((i-1>=0)&&(!buf[i-...
You can use z/OS system commands and z/OS UNIX shell commands to monitor your Apache Spark workload, especially its usage of system resources.
🐚 Portable Unix shell commands for Node.js nodejsjavascriptshellbashunixnodeshelljs UpdatedFeb 22, 2025 JavaScript Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for 📖 vimeditorlinuxlearningeducationunixtutorialprogrammingbookbook-seriesadvancedcode-edi...
This article provides practical examples for 50 most frequently used commands in Linux / UNIX. This is not a comprehensive list by any means, but this should give you a jumpstart on some of the common Linux commands. Bookmark this article for your future reference. ...
http://www.suso.com/infosheets/shell-commands20050327.png 1,basename, 当向basename传递一个path name时,它会删除任何前缀,直到最后一个斜线('/')字符,然后返回结果。 $ basename /home/jsmith/base.wiki ->base.wiki 2, symbolic link就是一个已有文件的别名 ...
* small shell that supports command line parsing * and if..then..else.fi logic(by calling process()) */#include<stdio.h>#include<stdlib.h>#include<unistd.h>#include<signal.h>#include"smsh.h"#defineDFL_PROMPT">"intmain(){char*cmdline,*prompt,**arglist;int result;voidsetup();prompt...
ShellJS - Unix shell commands for Node.jsShellJS is a portable (Windows/Linux/macOS) implementation of Unix shell commands on top of the Node.js API. You can use it to eliminate your shell script's dependency on Unix while still keeping its familiar and powerful commands. You can also ...