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Full Discussion: Unix Shell basic loop massive n00b
Top Forums Shell Programming and Scripting Unix Shell basic loop massive n00b Post 302552129 by thurft on Thursday 1st of September 2011 04:50:34 PM
Old 09-01-2011
Quote:
Originally Posted by Corona688
grep "^${ID}:" users.db > /dev/null then. ^ means beginning of the line.
thank you!!

Another question:

how would i be a really cool way (the way u do it) to retrive the one b4 the last ":".
Shall i use "cut" and "tr" or there is an easier way?

also how could i save it to an array? ( you will prob know how to do it in 1 step and i would do it in 300)

Thank you so much!!... you prob saved me 4 hrs trying to figure it out and it would never look as neat!

---------- Post updated at 03:38 PM ---------- Previous update was at 03:27 PM ----------

Btw i ran the program and it returns an error after i written down the string
Quote:
1: line 5 p: [missing ']'
and it doesnt show any message
why is that?

---------- Post updated at 03:50 PM ---------- Previous update was at 03:41 PM ----------

Quote:
#!/bin/bash
while true
do
read -p "Please enter staff ID: " cSID
if [ "${#cSID}" -ne 3]
then
echo "wrong number of digits"
continue
fi

if ! [ -z "${cSID/[0-9]*/}" ]
then
echo "Not all digits"
continue
fi

if grep "^${cSID}:" users.db > /dev/null
then
echo "The string '$cSID' exists anywhere at all in users.db"
continue
fi
break # get out of loop
done
Last edited by thurft; 09-01-2011 at 05:50 PM..
 

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LEARN ABOUT SUSE

page_util_quote

page_util_quote(n)					      Parser generator tools						page_util_quote(n)

__________________________________________________________________________________________________________________________________________________

NAME

       page_util_quote - page character quoting utilities

SYNOPSIS

       package require page::util::quote  ?0.1?

       package require snit

       ::page::util::quote::unquote char

       ::page::util::quote::quote'tcl char

       ::page::util::quote::quote'tclstr char

       ::page::util::quote::quote'tclcom char

_________________________________________________________________

DESCRIPTION

       This package provides a few utility commands to convert characters into various forms.

API

       ::page::util::quote::unquote char
	      A  character,  as stored in an abstract syntax tree by a PEG processor (See the packages grammar::peg::interpreter, grammar::me, and
	      their relations), i.e. in some quoted form, is converted into the equivalent Tcl character. The character is returned as the  result
	      of the command.

       ::page::util::quote::quote'tcl char
	      This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser, will
	      regenerate the character in question and is 7bit ASCII. The string is returned as the result of this command.

       ::page::util::quote::quote'tclstr char
	      This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl  parser  and
	      will generate a human readable representation of the character in question.  The string is returned as the result of this command.

	      The  string  does not use any unprintable characters. It may use backslash-quoting. High UTF characters are quoted to avoid problems
	      with the still prevalent ascii terminals. It is assumed that the string will be used in a double-quoted environment.

       ::page::util::quote::quote'tclcom char
	      This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser  when
	      used within a Tcl comment. The string is returned as the result of this command.

BUGS, IDEAS, FEEDBACK
       This  document,	will  undoubtedly  contain  bugs  and  other  problems.  Please report such in the category page of the Tcllib SF Trackers
       [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have.

KEYWORDS

       page, parser generator, quoting, text processing

COPYRIGHT

       Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>

page									1.0							page_util_quote(n)
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