~ 正在被 bash 中的变量值替换

Question

所以我有一个脚本可以做到这一点

wget firefoxDownloadLink -o ~/firefox
mkdir ~/firefox-17
cd ~/firefox-17
tar xjf ~/firefox-17.0.1.tar.bz2

我明白了，但不知道为什么：

cd: context: No such file or directory
mkdir: cannot create directory `context/firefox-17': No such file or directory
cd: context/firefox-17: No such file or directory
tar (child): context/firefox-17.0.1.tar.bz2: Cannot open: No such file or directory

我已经用显示在那里的上下文值设置了一个变量，但我不明白为什么 ~ 被替换为该值。如果我不设置该值，它可以正常工作，但现在我需要它。

对可能发生的事情有什么建议吗？

Answer 1

~ 替换为 $HOME 的值，通常指向您的主目录。看起来你已经覆盖了 $HOME.

来自 bash 手册页：

If a word begins with an unquoted tilde character (~), all of the characters preceding the first unquoted slash (or all characters, if there is no unquoted slash) are considered a tilde-prefix. If none of the characters in the tilde-prefix are quoted, the characters in the tilde-prefix following the tilde are treated as a possible login name. If this login name is the null string, the tilde is replaced with the value of the shell parameter HOME. If HOME is unset, the home directory of the user executing the shell is substituted instead. Otherwise, the tilde-prefix is replaced with the home directory associated with the specified login name.

~ 正在被 bash 中的变量值替换

~ is being replaced by a variable's value in bash

linux

variables

bash

shell

scripting