# 自定义列表forloopin12345doecho"loop=$loop"doneexit0deyuy/bin/my_shell >>chmodu+x for1.shdeyuy/bin/my_shell >> ./for1.shloop=1loop=2loop=3loop=4loop=5还可以通过读取文件内容生成变量列表deyuy/bin/my_shell >>vim num.txt12345 6 7 8 #!/bin/bash # Program: # This program will...
In shell scripting, using user input as a condition for awhileloop adds dynamic executionas it enables us to control the flow of the script based on their input. 3.1. Prompting for User Input To demonstrate, let’s utilize thereadcommand to prompt the user: $ read -p "message prompt" v...
3、/etc/rc.d/rc3.d目录下分别有多个以K开头和以S开头的文件;分别读取每个文件,以K开头的输出为文件加stop,以S开头的输出为文件名加start,如K34filename stop S66filename start for files in /etc/rc.d/rc3.d/[KS]* ;do if [ `basename $files|cut -c1` == "K" ] ;then echo "$files stop...
In the above script, it prints value of x, at each iteration, but if the value of x reaches 5, then it just increment the value of x, then continue with the next iteration, it wont execute the rest body of the loop, so that value of x is not printed for the value 5. Continue ...
bash shell if-statement while-loop m3u 我正在编写一个脚本来解析m3u文件。目标是检索变量标记和url。我用这个文件做了测试。 #!/bin/bash echo "name,tvg-id,tvg-name,tvg-country,group-title,languages,url" while IFS= read -r line; do tags_detect="$(echo "$line" | grep -Eo '^#EXTINF:')...
In the above code snippet, the for loop generates the random number at max number of times. RANDOM is an internal bash function that returns a random integer at each invocation. Bash While Loop Another iteration statement offered by the shell programming language is the while statement. ...
读出的shell内置命令告诉while循环逐行读取myhosts线和分配每行变量的主机,然后传递给ping命令的内容。 #! /bin/bash # This script is used to demonstrate the use of awhileloopwhileread host; do ping -c 2 # fsck -n /dev/sdg1 根据fsck输出中的错误消息,我们将知道我们是否可以尝试自己解决问题或将其...
使用napi_run_script_path接口执行包内abc文件的使用限制 如何通过C接口使用网络相关功能 如何实现ArkTS与C/C++的HashMap转换 napi_call_function调用时除了会有pending exception外,是否还有其他异常场景 在HSP/HAR包中支持导出C/C++的Native方法吗?如果不支持,替代方案是什么 多so相互依赖场景下如何解耦 如...
The While Loop Nested Loop Python Infinite Loops Python Loops Video Tutorial <img src="https://i.ytimg.com/vi/ID/hqdefault.jpg" alt="" width="480" height="360"> What Are Python Loops In Python, statements are executed in a sequential manner i.e. if our code is made up of several...
Describe the bug I am using QEMU to run shell_uart. In shell "execute" function, there is a while loop to parse each argument from "sh->ctx->cmd_buff" one at a time. One of the AND condition is "args_left > 0" which means there is argume...