bash

[Standa Pacan]

> 1. promennou zkratit o posledni znak
lastchar()
{
    # return the last character of a string in $rval
    if [ -z "$1" ]; then
        # empty string
        rval=""
        return
    fi
    # wc puts some space behind the output this is why we need sed:
    numofchar=`echo -n "$1" | wc -c | sed 's/ //g' `
    # now cut out the last char
    rval=`echo -n "$1" | cut -b $numofchar`
}

> 2. spocitat pocet znaku promenne
 http://www.fi.muni.cz/usr/brandejs/unix/20310.html

Vsechno lze najit pres google:)
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=bash+cut+last+char
nebo v historii konference...

S Pozdravem
Standa Pacan
http://baz.ic.cz