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06-09-2007
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UNIX command to reverese lower and upper case
im trying to find a command to
change all upper case to lower case and all lower case to upper case. for example: file is 'RED sox' need it changed to 'red SOX' tried tr 'a-zA-Z' 'A-Za-z' didn't work what an i missing?? thanx for the help |
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06-09-2007
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I would expect it to work with single quotes as well: Code:
$ echo RED sox | tr 'a-zA-Z' 'A-Za-z' red SOX $ rfourn, what version of Unix are you using? And what shell? The pre-posix USG based version of tr used to require brackets around a range. On such a version, tr '[a-z]' '[A-Z]' would work for sure. I don't remember for sure if multiple ranges would work, but I think they did. If so, tr '[a-z][A-Z]' '[A-Z][a-z]' would work. BSD never required the brackets and Posix adopted the BSD style for ranges. Legacy USG scripts will tend to work with a Posix version of tr because with tr '[a-z]' '[A-Z]' brackets are being replaced by themselves. A legacy USG scrip with code like: tr 'a-z' where the 'a-z' is supposed to be exactly 3 characters will fail though. I hope you aren't using a very old version of Unix with behavior like this. But if you are, it is especially crucial that you mention your Unix version with every question. |
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12-07-2007
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Works for me on HP-UX, Solaris, and Cygwin on Windoze.
# uname -a SunOS mysun 5.10 Generic_118833-17 sun4v sparc SUNW,Sun-Fire-T200# echo RED sox | tr 'a-zA-Z' 'A-Za-z' RED sox # uname -a HP-UX myhp B.11.11 U 9000/800 158454601 unlimited-user license # echo RED sox | tr 'a-zA-Z' 'A-Za-z' red SOX $ uname -a CYGWIN_NT-5.0 mypc 1.5.24(0.156/4/2) 2007-01-31 10:57 i686 Cygwin $ echo RED sox | tr 'a-zA-Z' 'A-Za-z' red SOX |
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