Al Bogner wrote: Warum?
Ich habe in einem Script zB PACKFAKTOR=$(eval echo \$PACKFAKTOR$i) und das funktioniert.
Variable Variablen will man nicht. Why it's stupid to 'use a variable as a variable name' (Eigentlich in Perl, aber weitgehend auch für Shell argumentierbar) http://perl.plover.com/varvarname.html http://perl.plover.com/varvarname2.html http://perl.plover.com/varvarname3.html Man muß sie verwenden, wenn man keine Arrays hat. Man will sie nicht, wenn man Arrays hat. Bash hat Arrays. man bash ... Arrays Bash provides one-dimensional array variables. Any vari able may be used as an array; the declare builtin will explicitly declare an array. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. Arrays are indexed using integers and are zero-based. An array is created automatically if any variable is assigned to using the syntax name[subscript]=value. The subscript is treated as an arithmetic expression that must evaluate to a number greater than or equal to zero. To explicitly declare an array, use declare -a name (see SHELL BUILTIN COMMANDS below). declare -a name[subscript] is also accepted; the subscript is ignored. Attributes may be specified for an array variable using the declare and readonly builtins. Each attribute applies to all mem bers of an array. Arrays are assigned to using compound assignments of the form name=(value1 ... valuen), where each value is of the form [subscript]=string. Only string is required. If the optional brackets and subscript are supplied, that index is assigned to; otherwise the index of the element assigned is the last index assigned to by the statement plus one. Indexing starts at zero. This syntax is also accepted by the declare builtin. Individual array ele ments may be assigned to using the name[subscript]=value syntax introduced above. Any element of an array may be referenced using ${name[subscript]}. The braces are required to avoid con flicts with pathname expansion. If subscript is @ or *, the word expands to all members of name. These subscripts differ only when the word appears within double quotes. If the word is double-quoted, ${name[*]} expands to a sin gle word with the value of each array member separated by the first character of the IFS special variable, and ${name[@]} expands each element of name to a separate word. When there are no array members, ${name[@]} expands to nothing. This is analogous to the expansion of the special parameters * and @ (see Special Parameters above). ${#name[subscript]} expands to the length of ${name[sub script]}. If subscript is * or @, the expansion is the number of elements in the array. Referencing an array variable without a subscript is equivalent to referencing element zero. The unset builtin is used to destroy arrays. unset name[subscript] destroys the array element at index sub script. unset name, where name is an array, or unset name[subscript], where subscript is * or @, removes the entire array. The declare, local, and readonly builtins each accept a -a option to specify an array. The read builtin accepts a -a option to assign a list of words read from the standard input to an array. The set and declare builtins display array values in a way that allows them to be reused as assignments. Sollten bash-Arrays nicht ausreichen, verwendet man das falsche Werkzeug für den Job -> man perl Kristian