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Full Discussion: Pic a value from a line at runtime
Top Forums Shell Programming and Scripting Pic a value from a line at runtime Post 302828261 by bakunin on Tuesday 2nd of July 2013 06:14:40 AM
Old 07-02-2013
You can use "sed" to manipulate the line. The following expression will pick up anything between "BILL" and "ACCOUNT":

Code:
echo "BIP in report_one_acnt> **SUCCESSFUL** BILL 25895519 ACCOUNT 7615" |\
sed 's/^.*BILL //; s/ ACCOUNT.*$//'

The first regexp cuts away everything before and including "BILL " (with a space following), the second cuts everything from " ACCOUNT" (with a leading blank) to the end of line, which leaves solely the number.

Still, this might have to be checked if it is indeed a number (for instance, "...BILL FOOBAR ACCOUNT..." might break whatever follows, because the extracted "FOOBAR" is NOT a number). You can do this by:

Code:
# catch the result in a variable
var="$( echo "BIP in report_one_acnt> **SUCCESSFUL** BILL 25895519 ACCOUNT 7615" |\
        sed 's/^.*BILL //; s/ ACCOUNT.*$//' \
      )

# test if "$var" contains only digits:
if [ -n "$(echo "$var" | sed 's/[0-9]//g)" ] ; then
     echo "$var is not a number"
else
     echo "$var is a number"
fi

I hope this helps.

bakunin
[/code]
 

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LEARN ABOUT DEBIAN

grab-account

GRAB-ACCOUNT(8) 						 chiark utilities						   GRAB-ACCOUNT(8)

NAME

       grab-account - add new account synchronised to remote system

SYNOPSIS

       grab-account local-user source [remote-user]

DESCRIPTION

       grab-account  reconfigures  sync-accounts  to  start synchronising a specified local user (which may not yet exist) from a specified remote
       system, and then invokes sync-accounts once to synchronise from that source.

       /etc/sync-accounts/createuser should contain a addhere line in the appropriate source section (ie, after host source).  grab-account adds a
	 user local-user [remote=remote-user]
       directive just before addhere and runs sync-accounts source.

EXIT STATUS

       0      All went well.

       any other
	      There were problems.

FILES

       /etc/sync-accounts; See also sync-accounts(8).

ENVIRONMENT

       See sync-accounts(8).

BUGS

       There is no locking of /etc/sync-accounts so do not invoke grab-account from a script, or more than once at a time by hand.   Do  not  edit
       /etc/sync-accounts by hand and also simultaneously run grab-account.

       The mechanism involving addhere is suboptimal.  This should be done with an include feature in sync-accounts, so that grab-account does not
       have to edit a configuration file that really belongs to the sysadmin.

AUTHOR

       grab-account and this manpage are part of the sync-accounts package which was written by Ian  Jackson  <ian@chiark.greenend.org.uk>.   They
       are Copyright 1999-2000,2002 Ian Jackson <ian@davenant.greenend.org.uk>, and Copyright 2000-2001 nCipher Corporation Ltd.

       The  sync-accounts  package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as
       published by the Free Software Foundation; either version 3, or (at your option) any later version.

       This is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of  MERCHANTABILITY	or
       FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You  should  have received a copy of the GNU General Public License along with this program; if not, consult the Free Software Foundation's
       website at www.fsf.org, or the GNU Project website at www.gnu.org.

SEE ALSO

       sync-accounts(8), sync-accounts(5), passwd(5)

Greenend							  14th July 2002						   GRAB-ACCOUNT(8)
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