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This is exactly the same as a wildcard - good for times when wildcards are disabled and when you want have a wildcard of a directory that is not your current ({`ls /path/to/dir`}). Does not work on older versions of Bash though.
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are the {} necessary?
if you use backticks often, especially in scripts, it's a good idea to override possible aliases...
According to the bash documentation (for the current version 4.0) aliases are only expanded for "simple commands" http://www.gnu.org/software/bash/manual/bashref.html#Aliases . In my shell, ls is aliased to "ls --color=auto" but if I do
echo {`ls`}I don't get any color I just get the filenames in curly braces. I think you may be missing files at the beginning and end of the list because if you do:
mkdir testdir; cd testdirtouch file{1,2,3,4}ls {`ls`}then the result is
ls: cannot access {file1: No such file or directoryls: cannot access file4}: No such file or directoryfile2 file3so I think you are missing files with with curly braces and should leave them off.