What is Bash?Completed 100 XP 5 minutes Bash is a vital tool for managing Linux machines. The name is short for "Bourne Again Shell."A shell is a program that commands the operating system to perform actions. You can enter commands in a console on your computer and run the commands ...
while read -p "What file do you want to test?" filename do if [ ! -e "$filename" ]; then echo "The file does not exist." continue fi echo "You entered a valid file.." done上面例子中,只要用户输入的文件不存在,continue命令就会生效,直接进入下一轮循环(让用户重新输入文件名),不再执...
wingsummer@wingsummer-PC ~ → echo {Who,What,Why,When,How}? Who? What? Why? When? How? 内容总结大括号允许创建字符串序列和展开。 要使用带大括号的变量,需要使用eval命令。小试牛刀使用大括号展开创建100个文本文件。🔒 点击查看答案 🔒 wingsummer@wingsummer-PC txts → eval touch {0..100...
/bin/bashwhileread-p"What file do you want to test?"filenamedoif[ ! -e"$filename"];thenecho"The file does not exist."continuefiecho"You entered a valid file.."done 上面例子中,只要用户输入的文件不存在,continue命令就会生效,直接进入下一轮循环(让用户重新输入文件名),不再执行后面的打印语句...
What operating system are you running this on? I will try to debug later today (if I have a chance) or early next week. Sorry, something went wrong. Copy link Contributor jmstovercommentedMar 13, 2016 What about adding in the following (is there an easy way to add in a ...
| What version of Butterfly are you use? 4.7.0 是否修改过主题文件? || Has the theme files been modified? 是(Yes) 使用的瀏覽器? || What browse are you using? Edge 使用的系統? || What operating system are you using? Linux 依賴插件 | Package dependencies Information npm uninstall hexo-...
What is Bash? Bash is the shell, or command language interpreter, for the GNU operatiing system. The name is an acronym for the 'Bourne-Again SHell', a pun on Stephen Bourne, the author of the direct ancestor of the current Unix shell (sh),which appeared in the Seven Edition Bell Lab...
while read -p "What file do you want to test?" filename do if [ ! -e "$filename" ]; then echo "The file does not exist." continue fi echo "You entered a valid file.." done 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
What is a shell? In computing, ashellprogram provides access to an operating system's components. The shell gives users (or other programs) a way to get "inside" the system; the shell defines the boundary between inside and outside. ...
随笔:What is Bash? What is shell? 首先是: What is Bash? Bash is the shell, or command language interpreter, for the GNU operatiing system. The name is an acronym for the 'Bourne-Again SHell', a pun on Stephen Bourne, the author of the direct ancestor of the current Unix shell (sh...