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macosshellbackticks

Backticks returns filename with spaces and surrounding command fails

I am trying to do something like "copy the newest file in a directory." I have come up the following command simple command using backticks, which works fine for filenames without embedded white space:

cp -rp `ls -1d searchstring | head -1` destination

As you can see this should work fine when the returned file has no space within it. However, this will obviously not work when there is such a space.

I need either a way to handle the output of the backticks, or some alternate approach.

Solution

  • You can treat the result of the command substitution as a single word by adding double quotes around it:

    cp -rp "`ls -t searchstring | head -n 1`" destination

    The double quotes are not needed when assigning to a variable. a=`uptime` is equivalent to a="`uptime`".