将带有空格 + 通配符的变量传递给远程 SSH

Question

我试图将一个包含空格的变量传递给ssh。

report_name="This is a sample report"
dir=/home/sample
ssh $remote_host "ls -t "$dir/$report_name"*.xlsx | head -1"

输出：

ls: is: No such file or directory
ls: a: No such file or directory
ls: sample: No such file or directory
ls: report*.xlsx: No such file or directory

如何做到这一点？

编辑：

答：经过几次试验和错误，我让它在下面工作。

ssh $remote_host "ls -t "$dir"/'"$report_name"'.xlsx | head -1"

Answer 1

下面是一个不涉及转义空格的示例：

#!/bin/bash
report_name="This is a sample report"
dir=/tmp
echo "First file:"
ssh $remote_host "ls -t '$dir/$report_name'*.xlsx | head -1"
echo "All files:"
ssh $remote_host "ls -t '$dir/$report_name'*.xlsx"

外部双引号实质上转义了内部单引号。这导致它们进入远程外壳。这是我的输出：

First file:
/tmp/This is a sample report_4.xlsx
All files:
/tmp/This is a sample report_4.xlsx
/tmp/This is a sample report_2.xlsx
/tmp/This is a sample report_3.xlsx
/tmp/This is a sample report_1.xlsx