příkaz tr

[vlasta at devnull.cz]

On Fri, 13 Jun 2008, Jaroslav Votruba wrote:

> mohli by jste mi prosim vysvetlit, jak napsat prikaz pomoci tr a nahradit 
> jedno slovo druhym?
> pokud dam tr "pokus" "rum" < aa
> vysledek je rummm, tj 4 a 5 znak jsou nahrazeny poslednim znakem slova 
> rum.Vim, ze to jde sedem, ale rad bych to rozlousknul.

man tr
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SYNOPSIS
   tr [-Ccsu] string1 string2
   tr [-Ccu] -d string1
   tr [-Ccu] -s string1
   tr [-Ccu] -ds string1 string2

DESCRIPTION
   The tr utility copies the standard input to the standard output with
   sub-stitution or deletion of selected characters.

...

   In the first synopsis form, the characters in string1 are translated
   into the characters in string2 where the first character in string1 is
   trans-lated into the first character in string2 and so on.  If string1
   is longer than string2, the last character found in string2 is
   duplicated until string1 is exhausted.
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Vlasta