该case语句使用Extension变量作为它试图与子句匹配的表达式。#!/bin/bashfor File in $(ls)do # extract the file extension Extension=${File##*.} case "$Extension" in sh) echo " Shell script: $File" ;; md) echo " Markdown file: $File" ;; png) echo "PNG i...
这存储在Extension字符串变量中。 该case语句使用Extension变量作为它试图与子句匹配的表达式。 #!/bin/bash for File in $(ls) do # extract the file extension Extension=${File##*.} case "$Extension" in sh) echo " Shell script: $File" ;; md) echo " Markdown file: $File" ;; png) echo ...
Shell的作用是解释执行用户的命令,用户输入一条命令,Shell就解释执行一条,这种方式称为交互式(Interactive),Shell还有一种执行命令的方式称为批处理(Batch),用户事先写一个Shell脚本(Script),其中有很多条命令,让Shell一次把这些命令执行完,而不必一条一条地敲命令。Shell脚本和编程语言很相似,也有变量和流程控制语句...
NOTE:Every bash shell script in this tutorial starts withshebang:"#!"which is not read as a comment. First line is also a place where you put your interpreter which is in this case: /bin/bash. Here is our first bash shell script example: #!/bin/bash # declare STRING variable STRING...
Looking for beginner-friendly bash script example? Learn how to automate your tasks and simplify your workflow with ease.
bash脚本:case语句 case语句结构: case SWITCH in value1) statement ... ;; value2) statement ... ;; *) statement ... ;; esac 联系: 1.接受从键盘上输入的字符,并作出判断是数字、大小写字母或特殊字符。 #!/bin/bash case $1 in [0-9])...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
$ chmod +x nested_script.sh $ ./nested_script.sh The dog barks. The output isThe dog barks.This is because theanimalvariable is set todogand thesoundvariable is set tobark.The code first checks the value ofanimalusing the outercasestatement. Sinceanimalisdog, it matches the first pattern...
#A function to return an echo statement. helloFunc() { echo "Hello from a function." } #invoke the first function helloFunc() helloFunc 你会看到如下输出结果: [zexcon@fedora ~]$ ./learnToScript.sh Hello from a function. [zexcon@fedora ~]$ ...
‘a’ and ‘b’. The script checks if ‘a’ is equal to ‘b’. If it’s not, it moves on to the ‘elif’ statement to check if ‘a’ is greater than ‘b’. If neither condition is met, it executes the ‘else’ statement, which in this case, prints ‘a is less than b’...