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Print in next line after coma

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# 8  
Old 02-17-2015
Some versions or 'tr' insist on char sets in and out in square brackets, probably a POSIX thing. You could 'tr' both ' ' and ',' to '\n' or 'tr' ',' to '\n' and then "tr -d ' '". The 'tr' is very fast, tolerant of long lines and large files, being entirely char by char.
Code:
tr -d '[ ]' < in_file | tr '[,]' '[\n]' > out_file

# 9  
Old 02-17-2015
Quote:
Originally Posted by DGPickett
Some versions or 'tr' insist on char sets in and out in square brackets, probably a POSIX thing. You could 'tr' both ' ' and ',' to '\n' or 'tr' ',' to '\n' and then "tr -d ' '". The 'tr' is very fast, tolerant of long lines and large files, being entirely char by char.
Code:
tr -d '[ ]' < in_file | tr '[,]' '[\n]' > out_file

That was for ranges, not for enumerated strings of characters..

Quote:
On historical System V systems, a range expression requires enclosing square-brackets, such as:

tr '[a-z]' '[A-Z]'

However, BSD-based systems did not require the brackets, and this convention is used here to avoid breaking large numbers of BSD scripts:

tr a-z A-Z

The preceding System V script will continue to work because the brackets, treated as regular characters, are translated to themselves. However, any System V script that relied on "a-z" representing the three characters 'a', '-', and 'z' have to be rewritten as "az-".
tr: rationale

In fact, using brackets that way will also delete square brackets:
Code:
$  echo 'x[  ]x' | tr -d '[ ]'
xx

Last edited by Scrutinizer; 02-17-2015 at 03:22 PM..
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