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0 pointsinopinatus8y ago0 comments

A shell glob cannot tell you the size, owner, permissions, timestamps of a file. For that .. oh look! There's ls(1). Which, by the way, spits out whitespace it sees just fine, unless you specified -q or implied it with output to a tty. If some code can't handle the result, it's that code that is broken. Tip: the only really problematic character is a newline; if you think you could be seeing those, you can still deal with it programatically, but I use find(1).

In the meantime, I recommend you try deleting /bin/ls from your system and then filing bugs against everything that breaks.

0 comments

LambdaComplex8y ago

Alright, here's an example:

  touch 'file with spaces'
  for file in $(ls); do
    rm -- "$file"
  done

This will not work, because $(ls) will get expanded to three items, not one. rm will be called on the files "file", "with", and "spaces"...which is not what was intended.

Now do this:

  touch 'file with spaces'
  for file in *; do
    rm -- "$file"
  done

This works correctly.

aabbcc12418y ago

  ls -Q

this will quote the file name for pipe operation

LambdaComplex8y ago

Still doesn't work.

  touch 'file with spaces'
  for file in $(ls -Q); do echo "$file"; done

This prints:

  "file
  with
  spaces"

j / k navigate · click thread line to collapse

0 pointsinopinatus8y ago0 comments

In the meantime, I recommend you try deleting /bin/ls from your system and then filing bugs against everything that breaks.

0 comments

LambdaComplex8y ago

Alright, here's an example:

  touch 'file with spaces'
  for file in $(ls); do
    rm -- "$file"
  done

This will not work, because $(ls) will get expanded to three items, not one. rm will be called on the files "file", "with", and "spaces"...which is not what was intended.

Now do this:

  touch 'file with spaces'
  for file in *; do
    rm -- "$file"
  done

This works correctly.

aabbcc12418y ago

  ls -Q

this will quote the file name for pipe operation

LambdaComplex8y ago

Still doesn't work.

  touch 'file with spaces'
  for file in $(ls -Q); do echo "$file"; done

This prints:

  "file
  with
  spaces"

j / k navigate · click thread line to collapse