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Top Forums UNIX for Dummies Questions & Answers simple unpack script Post 302180758 by jboss on Tuesday 1st of April 2008 04:53:47 AM
Old 04-01-2008
okay please tell me if i am being annoying.... but i think i have lost track of where to go next.... sorry if im not following your hints but this is a massive learning curve for me. I am truely grateful for your help..

correct me if im wrong but, in the bellow code we have a case statement to handle all the different extension types... then a function "untgz" to handle one parameter at a time... in the main program we have an attempt to handle the basename of the file currently bieng read.

im sorry but could you possibly tell me where to go next. I dont want you to tell me the solution just help me understand what part of my code i need to rewrite, comands to research etc....

If i sound lost it mainly because ive only been using unix and doing shell scripting for three weeks.

thankyou once again

Code:
#!/bin/sh
untgz () {
  gunzip -c <"$1" | tar xf -
}

for l in "$@"; 
  case $l in 
    *.tar.gz) ext=".tar.gz"; command=untgz;;
    *.tgz) ext=".tgz"; command=untgz;;
    *.tar.Z) ext=".tar.Z"; command=untgz;;
    *.zip) ext=".zip"; command=unzip;;
    *.ZIP) ext=".ZIP"; command=unzip;;
    *) echo "$0: cannot handle $l, skipping" >&2
        continue ;;
  esac

  A=`basename "$l" "$ext"` #is this where i should have my while loop?
  mkdir "$A"
  cd "$A"
  $command "$1"
  cd ..
done

 

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LEARN ABOUT OPENDARWIN

tcl_allowexceptions

Tcl_AllowExceptions(3)					      Tcl Library Procedures					    Tcl_AllowExceptions(3)

__________________________________________________________________________________________________________________________________________________

NAME

       Tcl_AllowExceptions - allow all exceptions in next script evaluation

SYNOPSIS

       #include <tcl.h>

       Tcl_AllowExceptions(interp)

ARGUMENTS

       Tcl_Interp   *interp	 (in)	   Interpreter in which script will be evaluated.
_________________________________________________________________

DESCRIPTION

       If  a  script is evaluated at top-level (i.e. no other scripts are pending evaluation when the script is invoked), and if the script termi-
       nates with a completion code other than TCL_OK, TCL_ERROR or TCL_RETURN, then Tcl normally converts this into a TCL_ERROR  return  with	an
       appropriate  message.  The particular script evaluation procedures of Tcl that act in the manner are Tcl_EvalObjEx, Tcl_EvalObjv, Tcl_Eval,
       Tcl_EvalEx, Tcl_GlobalEval, Tcl_GlobalEvalObj, Tcl_VarEval and Tcl_VarEvalVA.

       However, if Tcl_AllowExceptions is invoked immediately before calling one of those a procedures, then arbitrary completion codes  are  per-
       mitted from the script, and they are returned without modification.  This is useful in cases where the caller can deal with exceptions such
       as TCL_BREAK or TCL_CONTINUE in a meaningful way.

KEYWORDS

       continue, break, exception, interpreter

Tcl									7.4						    Tcl_AllowExceptions(3)
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