☰

从whiptail命令的输出创建一个数组

tag-icon • tag-icon linux shell-script array whiptail
从whiptail命令的输出创建一个数组

因此，我尝试使用whiptail命令为用户提供选择他们想要在系统中安装的不同内容的选项。我使用whiptail --checklist如下命令：

name =$(whiptail --title "Tools to install" --checklist 20 78 4 \
"NTP" "NTP setup" OFF\
"Perl" "Perl install" OFF\
"Ruby" "Ruby install" OFF \
"Python" "Python install" OFF 3>&1 1>&2 2>&3)

现在，如果我的用户选择 Perl 和 python，这将输出“Perl”和“Python”。我正在寻找的是能够将这些输出转换为数组，因为最终我需要循环遍历这个数组。我需要将这些输出作为我正在使用的下一个命令的输入。

任何帮助或领导将不胜感激！

答案1

在一个简单的情况下，你会做这样的事情：

CHOICES=( $(whiptail --title "Tools to install" \
  --checklist "Choose something" 20 78 4 \
  "NTP" "NTP setup" OFF \
  "Perl" "Perl install" OFF \
  "Ruby" "Ruby install" OFF \
  "Python" "Python install" OFF 3>&1 1>&2 2>&3) )

但是，由于返回的值whiptail被引用，所以这不起作用。例如，这个脚本：

CHOICES=( $(whiptail --title "Tools to install" \
  --checklist "Choose something" 20 78 4 \
  "NTP" "NTP setup" OFF \
  "Perl" "Perl install" OFF \
  "Ruby" "Ruby install" OFF \
  "Python" "Python install" OFF 3>&1 1>&2 2>&3) )

for choice in "${CHOICES[@]}"; do
    echo "choice: $choice"
done

将输出（如果我选择 Ruby 和 Python）：

choice: "Ruby"
choice: "Python"

如果你的值之一包含空格，它就会崩溃。例如，如果我像这样修改命令行：

CHOICES=( $(whiptail --title "Tools to install" \
  --checklist "Choose something" 20 78 4 \
  "NTP Setup" "NTP setup" OFF \
  "Perl install" "Perl install" OFF \
  "Ruby" "Ruby install" OFF \
  "Python Install" "Python install" OFF 3>&1 1>&2 2>&3) )

for choice in "${CHOICES[@]}"; do
    echo "choice: $choice"
done

我们得到：

choice: "NTP
choice: Setup"
choice: "Perl
choice: install"

您可以添加一个eval来解决上述两个问题：

eval CHOICES=( $(whiptail --title "Tools to install" \
  --checklist "Choose something" 20 78 4 \
  "NTP Setup" "NTP setup" OFF \
  "Perl install" "Perl install" OFF \
  "Ruby" "Ruby install" OFF \
  "Python Install" "Python install" OFF 3>&1 1>&2 2>&3) )

for choice in "${CHOICES[@]}"; do
    echo "choice: $choice"
done

给出与前面示例相同的选择，这将输出：

choice: NTP Setup
choice: Perl install

相关内容