A difficult script (for me) Post: 302156162

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Top Forums Shell Programming and Scripting A difficult script (for me) Post 302156162 by DNAx86 on Monday 7th of January 2008 12:19:29 PM

01-07-2008

Registered User

A difficult script (for me)

Hi,
I'm a beginners, this is one of my first script, it's easy, but I don't know how to write this script:

The script receive in input 4 parameters:
1) user_name
2) r and/or w and/or x ( rwx, rw, x, ....)
3) u and/or g and/or o ( u, uo, ugo, ...)
4) the path name

The script print a list of normal files ( “-” with ls) created by user_name, with at least the permission specified as 2nd parameters for the groups specified as 3rd parameter , starting from the path name passed as 4th parameter.

Example of permission:
giving: rw, u
I look for “ rw-......“ using ls -lr (. is a generic character)
giving: rw, ugo
I look for “ rw-rw-rw- “

I tryed in many ways, but for example i f I execute a simple script like this:
permission=-rw-r--r--
ls -lR | grep '^-$permission'

The script don't print anything on the screen, but I type in the shell:
ls -lR | grep '^-rw-r--r--'
the output is correct.

Moreover I don't know how to separate the colums of ls -lR using CUT (I suppose) to select oly the rows that are created by the user

So I understood I need help. Please help me.
PS: i have to write many script, and this is the simplest, so if I don't know how to write this, I'll never be able to write the others..

Last edited by DNAx86; 01-07-2008 at 01:36 PM..

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LEARN ABOUT CENTOS

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)