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Re: Bash file to variable string problem -- must be simple. What am I missing?

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Hi,

if spaces are involved, then quotation marks hould be put around the
argument of "echo".

Using the leading blank from David Wright's post:

  $ fname=" long file with spaces.mp4"
  $ x=`echo $fname | rev | cut -d. -f2 | rev`
  $ test "$x".mp4 = "$fname" && echo IS EQUAL
  $

I.e. "$x".mp4 and "$fname" are not equal.
That's because the leading blank got lost in the "echo" run:

  $ echo "'$x'"
  'long file with spaces'

Now with quotation marks around $fname to preserve the leading blank:

  $ x=`echo "$fname" | rev | cut -d. -f2 | rev`
  $ test "$x".mp4 = "$fname" && echo IS EQUAL
  IS EQUAL

A similar effect would happen with double blanks inside the name:

  $ fname="long file with  double  spaces.mp4"
  $ x=`echo $fname | rev | cut -d. -f2 | rev`
  $ echo "'$x'"
  'long file with double spaces'
  $ x=`echo "$fname" | rev | cut -d. -f2 | rev`
  $ echo "'$x'"
  'long file with  double  spaces'


Have a nice day :)

Thomas

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Thread

Bash file to variable string problem -- must be simple. What am I  missing? deb <deb@rangingthoughts.org> - 2019-03-03 02:00 +0100
  Re: Bash file to variable string problem -- must be simple. What am  I missing? Roberto C. Sánchez <roberto@debian.org> - 2019-03-03 02:10 +0100
    re: Bash file to variable string problem -- must be simple. What am I  missing? deb <deb@rangingthoughts.org> - 2019-03-03 03:50 +0100
      re: Bash file to variable string problem -- must be simple. What am  I missing? "der.hans" <deb-user@LuftHans.com> - 2019-03-03 04:40 +0100
        [SOLVED] Re: Bash file to variable string problem -- must be simple.  What am I missing? deb <deb@rangingthoughts.org> - 2019-03-03 16:10 +0100
      Re: Bash file to variable string problem -- must be simple. What am  I missing? David Wright <deblis@lionunicorn.co.uk> - 2019-03-03 06:10 +0100
        Re: Bash file to variable string problem -- must be simple. What am I missing? "Thomas Schmitt" <scdbackup@gmx.net> - 2019-03-03 08:50 +0100
          Re: Bash file to variable string problem -- must be simple. What am  I missing? David Wright <deblis@lionunicorn.co.uk> - 2019-03-03 16:40 +0100
            Re: Bash file to variable string problem -- must be simple. What am I missing? "Thomas Schmitt" <scdbackup@gmx.net> - 2019-03-03 18:50 +0100
            Greg: Re: Bash file to variable string problem -- must be simple.  What am I missing? deb <deb@rangingthoughts.org> - 2019-03-04 14:40 +0100
            Re: Bash file to variable string problem -- must be simple. What am  I missing? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-03-04 14:40 +0100
          [SOLVED II] (Thomas) Re: Bash file to variable string problem -- must  be simple. What am I missing? deb <deb@rangingthoughts.org> - 2019-03-03 19:20 +0100
            Re: Bash file to variable string problem -- must be simple. What am I missing? "Thomas Schmitt" <scdbackup@gmx.net> - 2019-03-03 22:50 +0100
            Re: Bash file to variable string problem -- must be simple. What am  I missing? David Wright <deblis@lionunicorn.co.uk> - 2019-03-04 09:40 +0100
              David - Re: Bash file to variable string problem -- must be simple.  What am I missing? deb <deb@rangingthoughts.org> - 2019-03-04 15:10 +0100
                Re: David - Re: Bash file to variable string problem -- must be  simple. What am I missing? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-03-04 15:40 +0100

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