Question

我有一个使用strace，cp，awk和stat的脚本来创建带有进度条的cp。以下是代码中调用cp：

的部分

    strace -q -ewrite cp -- `printf '%q ' $@` 2>&1 | awk {Lots of code here}

问题是，我无法用空格复制任何东西。我该如何修改这个脚本以便它可以使用空格？感谢

编辑：这是输出：

matt: ~/tmp $ bash -x cp-progress "q" "file"
++ printf '%q ' q file
++ stat -c %s q
+ strace -q -ewrite cp -- q file
+ awk '{
        count += $NF
            if (count % 10 == 0) {
               percent = count / total_size * 100
               printf "%2d%% [", percent
               for (i=0;i<=percent / 2;i++)
                  printf "→"
               printf "→"

               printf "]\r"
            }
         }
         END { print "" }' total_size=5242880 count=0
100% [→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→]
matt: ~/tmp $ bash -x cp-progress "q" "file with spaces"
++ printf '%q ' q 'file with spaces'
+ strace -q -ewrite cp -- q 'file\' 'with\' spaces
++ stat -c %s q
+ awk '{
        count += $NF
            if (count % 10 == 0) {
               percent = count / total_size * 100
               printf "%2d%% [", percent
               for (i=0;i<=percent / 2;i++)
                  printf "→"
               printf "→"

               printf "]\r"
            }
         }
         END { print "" }' total_size=5242880 count=0
 0% [→→]

看到第一个？这工作正常，执行cp -- q file。现在，下一个，cp -- q 'file\' 'with\' spaces如何解决这个问题？

Answer 1

使用"$@"

man bash：

When  the expansion  occurs within double quotes, each parameter expands to a
separate word.  That is, "$@" is equivalent to "$1"  "$2"  ...

在您的情况下，请使用此表单：

strace -q -ewrite cp -- "$@" | ...

如何通过strace将带空格的多个文件名传递给命令？

1 个答案: