如何使用字符串作爲參數在爲... ...在Linux中殼聲明

Question

我熟悉的

for file in foo/folder\ with\ spaces/foo2/*.txt 
do 
    #do some stuff... 
done 

但是結構，我想提出foo/folder with spaces/foo2/*.txt到一個變量然後使用它。事情是這樣的：

myDirectory="foo/folder with spaces/foo2/*.txt" 

for file in $myDirectory 
do 
    # do some stuff 
done 

但是我在這裏寫是不行的，即使我做

myDirectory="food/folder\ with\ spaces/foo2/*.txt" 

或

for file in "$myDirectory" ... 

任何幫助將無法正常工作？這甚至有可能嗎？

Answer 1

嘗試在for循環中使用ls命令。這個工作對我來說：

for file in `ls "$myDirectory"` 

Answer 2

don't parse ls

# your files are expanded here 
# note lack of backslashes and location of quotes 
myfiles=("food/folder with spaces/foo2/"*.txt) 

# iterate over the array with this 
for file in "${myfiles[@]}"; do ... 

Answer 3

解析LS是一個壞主意，而不是僅僅做外殼通配符引號之外。

你也可以這樣做：

$mydir="folder/with spaces" 

for file in "$mydir"/*; do 
    ... 
done 

還應考慮如何find和xargs作品。使用這些問題可以解決許多這類問題。如果您想要安全，請特別注意-print0和-0選項。