shell中函数的应用
To turn the functions in this chapter into a library for use in other scripts, extract all the functions and concatenate them into one big file. If we call this file library.sh, a test script that accesses all of the functions might look like this:
#!/bin/sh # Library test script . library.sh initializeANSI echon "First off, do you have echo in your path? (1=yes, 2=no) " read answer while ! validint $answer 1 2 ; do echon "${boldon}Try again${boldoff}. Do you have echo " echon "in your path? (1=yes, 2=no) " read answer done if ! checkForCmdInPath "echo" ; then echo "Nope, can't find the echo command." else echo "The echo command is in the PATH." fi echo "" echon "Enter a year you think might be a leap year: " read year while ! validint $year 1 9999 ; do echon "Please enter a year in the ${boldon}correct${boldoff} format: " read year done if isLeapYear $year ; then echo "${greenf}You're right! $year was a leap year.${reset}" else echo "${redf}Nope, that's not a leap year.${reset}" fi exit 0
应用函数,我们就可以复用我们的脚本。
值得注意的是 $ . tinyscript.sh ,就是在当前shell下执行脚本,不加"."或source
则会在子shell下执行脚本,可能会有不同的情况发生,值得注意。
相关文章
Shell脚本实现随机数多种方法介绍(date、random、uuid)
这篇文章主要介绍了Shell脚本实现随机数多种方法介绍,本文讲解了通过时间获得随机数、通过内部系统变量、通过系统内部唯一数据生成随机数等方法,需要的朋友可以参考下2014-11-11获取服务器信息的Shell脚本分享(ubuntu、centos测试通过)
这篇文章主要介绍了获取服务器信息的Shell脚本分享(ubuntu、centos测试通过),本文直接给出实现代码,本文脚本实现获取linux发行版名称、查看系统是否为64位、系统内核版本等信息,需要的朋友可以参考下2014-12-12
最新评论