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Top Forums Shell Programming and Scripting How to assign the Pattern Search string as Input Variable Post 302394318 by radoulov on Thursday 11th of February 2010 05:51:18 AM
Old 02-11-2010
Quote:
Originally Posted by raghunsi
[...]

Basically I want script to read the /ect/hosts file & should match the pattern or else it should throw out " Invalid Request '
You can try something dirty like this:

Code:
fgrep "$1" /etc/hosts > /dev/null || {
  echo Invalid Request
  exit 1
  }

If your grep implementation supports the -q switch you don't have to redirect stdout. With POSIX implementation you could use -F instead of fgrep.
You could use a regex and be much more specific.
 

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Tcl_StringMatch(3TCL)					      Tcl Library Procedures					     Tcl_StringMatch(3TCL)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_StringMatch, Tcl_StringCaseMatch - test whether a string matches a pattern SYNOPSIS
#include <tcl.h> int Tcl_StringMatch(string, pattern) int Tcl_StringCaseMatch(string, pattern, nocase) ARGUMENTS
char *string (in) String to test. char *pattern (in) Pattern to match against string. May contain special characters from the set *?[]. int nocase (in) Specifies whether the match should be done case-sensitive(0) or case-insensitive(1). _________________________________________________________________ DESCRIPTION
This utility procedure determines whether a string matches a given pattern. If it does, then Tcl_StringMatch returns 1. Otherwise Tcl_StringMatch returns 0. The algorithm used for matching is the same algorithm used in the ``string match'' Tcl command and is similar to the algorithm used by the C-shell for file name matching; see the Tcl manual entry for details. | In Tcl_StringCaseMatch, the algorithm is the same, but you have the option to make the matching case-insensitive. If you choose this (by | passing nocase as 1), then the string and pattern are essentially matched in the lower case. KEYWORDS
match, pattern, string ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl 8.1 Tcl_StringMatch(3TCL)
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