如果，请在deb文件上命令

Question

我想为iOS创建一个DEB文件。我在Debian文件夹上创建了3个命令文件，其PROSINT，POSTINT和POSTRM。为什么我安装DEB文件时此代码无法运行？

#!/bin/bash
if [ "/System/Library/Fonts/Cache/AppleColorEmoji.ttf" ];then
mv /System/Library/Fonts/Cache/AppleColorEmoji.ttf /System/Library/Fonts/Cache/AppleColorEmoji.backup
elif [ "/System/Library/Fonts/Cache/[e-mail]" ];then
mv /System/Library/Fonts/Cache/[e-mail] /System/Library/Fonts/Cache/[e-mail]
elif [ "/System/Library/Fonts/Cache/[e-mail]" ];then
mv /System/Library/Fonts/Cache/[e-mail] /System/Library/Fonts/Cache/[e-mail]
else
     echo "cannot backup font"
fi

我希望此命令能够在dir中找到什么文件，并将该文件删除为备份。

Answer 1

您需要if -statement中的-f标志。-f标志测试文件，有关所有可能性，请参见man test。

我还添加了一些var，以使代码更易于阅读：

#!/bin/bash
orgdir="/System/Library/Fonts/Cache"
# targetdir is here equal to orgdir, maybe you want to change in the future.
targetdir="/System/Library/Fonts/Cache"
# When orgdir or targetdir contains spaces, you need double quotes,
# in this example you do not need them.
# I use the double quotes for good habits
if [ -f "${orgdir}/AppleColorEmoji.ttf" ]; then
   mv "${orgdir}/AppleColorEmoji.ttf" "${targetdir}/AppleColorEmoji.backup"
elif [ -f "${orgdir}/[e-mail]" ]; then
   mv "${orgdir}/[e-mail]" "${targetdir}/[e-mail]"
elif [ -f "${orgdir}/[e-mail]" ]; then
   mv "${orgdir}/[e-mail]" "${targetdir}/[e-mail]"   
else
     echo "cannot backup font"
fi

Answer 2

我的problm solve ..我使用此脚本..

#!/bin/bash
cd /System/Library/Font/Cache
Em="AppleColorEmoji.ttf"
Em2="AppleColorEmoji.Backup"
if [ -f "${Em}" ]; then
   mv "${Em}" "${Em2}"
else echo "Searching.."
fi
Em3="[e-mail]"
Em4="[e-mail]"
if [ -f "${Em3}" ]; then
  mv "${Em3}" "${Em4}"
else echo "Searching.."
fi
Em5="[e-mail]"
Em6="[e-mail]"
if [ -f "${Em5}" ]; then
  mv "${Em5}" "${Em6}"
else echo "Searching.."
fi