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Views: 908 | Replies: 1
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Join Date: Jun 2005
Posts: 6
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Newbie Poster
Is this valid in shell programming?
tr 'a-z' 'A-Z' < filename>filename
note: The filename refers to the same file.
tr 'a-z' 'A-Z' < filename>filename
note: The filename refers to the same file.
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Join Date: May 2004
Posts: 177
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Junior Poster
tr -s '[:lower:]' '[:upper:]' < filename > newfilename
You have to use POSIX character classes, not "regex" classes.
this: < filename > filename : causes filename to be truncated to zero length BEFORE tr runs.
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