The Bourne shell’s while loop uses exit codes, like the if conditional. For example, this script does 10 iterations: Bourne shell 的 while 循环使用退出代码,就像 if 条件一样。例如,此脚本进行了 10 次迭代: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/bin/sh FILE=/tmp/whiletest....
1、死循环学会用法 a = 1 while True: print(a) a +=1 2、无限次输入，直到输对，...
A handy way to iterate through all of the parameters passed involves the use of a while loop and the shift command. This command is what lets you iterate through all the arguments in the argument list (rather than remaining in an infinite loop). while [ $# -ne 0 ] do echo $1 shift...
I am using Do while loop and switch statement to accomplish this. And for each option, i have created a function, which respective Exe command and error trapping mechanism. This script ...
This is a very useful way to filter the results, which would be cumbersome and time-consuming in a for or while loop in a shell script. The uniq command is also rather unique in that if passed a second filename on the command line, it will write the output to that file instead of ...
Write a script to create an array with some elements and print all its elements by using while loop, for loop and the alternative for loop Using while loop #! /bin/bash declare -a fruits fruits={"A", "B", "C"} index=0 while [ index -lt ${#fruits[@]} ] do echo ${fruits...
A handy way to iterate through all of the parameters passed involves the use of a while loop and the shift command. This command is what lets you iterate through all the arguments in the argument list (rather than remaining in an infinite loop)....
25l" while : do #读取输入。注-s不回显，-n读到一个字符立即返回 read -s -n 1 key ...
What Are The 3 Types Of Scripting Errors The 5 Steps To Debug a Script in Bash Step 1: Use a Consistent Debug Library Step 2: Check For Syntax Error Step 3: Trace Your Script Command Execution Step 4: Use The Extended Debug Mode Step 5: Provide Meaningful Debug Logs A Complete Example...
while [ 1 ] do echo -n “Enter Name of File :”; read source_file if [ -f $source_file ] then echo “File $souce_file available” return else echo “File $source_file Not available” fi done } readDfile() { while [ 1 ] ...