简单 bash 重定向中的“没有这样的文件或目录”
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"No such file or directory" on simple bash redirection
提问by ACarter
Here is some code of mine:
这是我的一些代码：
gzip -c $path > /var/www/wiki/backup/$now/$file.gz
I'm gzipping the contents of $path(the path to a directory), and then sending the compressed file to /var/www/wiki/backup/$now/$file.gz. $nowcontains a directory name, $fileis the name I want to write the compressed file to.
我正在$path压缩（目录路径）的内容，然后将压缩文件发送到/var/www/wiki/backup/$now/$file.gz. $now包含一个目录名，$file是我想将压缩文件写入的名称。
However, on running the program, I get this error:
但是，在运行程序时，我收到此错误：
backup.sh: line 20: /var/www/wiki/backup/Sunday/extensions.gz: No such file or directory
^$now ^$file
(line 20 is the line given above)
（第 20 行是上面给出的行）
Why is the program breaking? I know Sunday/extensions.gzdoesn't exist (although Sunday does), that's why I'm asking you to write to it!
为什么程序会中断？我知道Sunday/extensions.gz不存在（虽然星期天确实存在），这就是为什么我要你写信给它！
Full program code:
完整程序代码：
#!/bin/bash
now=$(date +"%A")
mkdir -p /var/www/wiki/backups/$now
databases=(bmshared brickimedia_meta brickimedia_en brickimedia_customs)
locations=("/var/www/wiki/skins" "/var/www/wiki/images" "/var/www/wiki/")
for db in ${databases[*]}
do
#command with passwords and shoodle
:
done
for path in ${locations[*]}
do
#echo "" > var/www/wiki/backup/$now/$file.gz
file=`echo $path | cut -d/ -f5`
echo $path
gzip -c $path > /var/www/wiki/backup/$now/$file.gz
done
采纳答案by suspectus
The directory created is backups, the gzip is to backup.
创建的目录是备份，gzip 是备份。
mkdir -p /var/www/wiki/backups/$now
gzip -c $path > /var/www/wiki/backup/$now/$file.gz
回答by glenn Hymanman
One of your locations is "/var/www/wiki/". Then you have
您的位置之一是“/var/www/wiki/”。那么你有
file=`echo $path | cut -d/ -f5`
gzip -c $path > /var/www/wiki/backup/$now/$file.gz
Since $filecontains the empty string, you're attempting to write to /var/www/wiki/backup/Sunday/.gz. That's a problem but it's not the error you're reporting.
由于$file包含空字符串，您正在尝试写入/var/www/wiki/backup/Sunday/.gz. 这是一个问题，但这不是您报告的错误。
When I try to gzip a directory, I get this error
当我尝试 gzip 目录时，出现此错误
$ gzip -c ./subdir/ > subdir.gz
gzip: ./subdir/ is a directory -- ignored
That's a problem but it's not the error you're reporting.
这是一个问题，但这不是您报告的错误。
@suspectus solved your reported problem.
@suspectus 解决了您报告的问题。
