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Full Discussion: Number lines of file and assign variable to each number
Top Forums Shell Programming and Scripting Number lines of file and assign variable to each number Post 302390043 by TonyFullerMalv on Tuesday 26th of January 2010 06:04:05 PM
Old 01-26-2010
Reading every line in to variables isn't necessary, how about:
Code:
$ cat numbered_file.sh
echo -n "input a number: "
read RESP

VARIABLE=`grep "^${RESP} " numbered_file`

echo "VARIABLE = ${VARIABLE}."
$

Note ^ = beginning of line and space after ${RESP} so when you enter 3 you do not also get lines 30, 31, 32, ..., 300, etc.
Run of script using your example 3 line input file:
Code:
$ ./numbered_file.sh
input a number: 3
VARIABLE = 3 more stuff.
$./numbered_file.sh
input a number: 1
VARIABLE = 1 some data.
$ ./numbered_file.sh
input a number: 2
VARIABLE = 2 something else.
$

Is that what you are after?

---------- Post updated at 23:04 ---------- Previous update was at 22:36 ----------

Otherwise you could do this:

Code:
$ cat ./numbered_file_array_select.sh

# Load array:
ARRAYPTR=0
while read LINE; do
  ARRAY_ENTRY=`echo ${LINE} | awk '{ print $1 }'`
  ARRAY_LINE=`echo ${LINE} | sed -e 's/^'${ARRAY_ENTRY}' //'`
  ARRAYPTR=`expr ${ARRAYPTR} + 1`
  ARRAYSTORE[${ARRAY_ENTRY}]=${ARRAY_LINE}
done < numbered_file

# Search Array:
echo -n "Input a number up to ${ARRAYPTR}: "
read RESP
VARIABLE=`echo ${ARRAYSTORE[${RESP}]}`

echo "VARIABLE = ${VARIABLE}."
$

Run through:
Code:
$ ./numbered_file_array_select.sh
Input a number up to 3: 2
VARIABLE = something else.
$ ./numbered_file_array_select.sh
Input a number up to 3: 1
VARIABLE = some data.
$ ./numbered_file_array_select.sh
Input a number up to 3: 3
VARIABLE = more stuff.

 

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LEARN ABOUT DEBIAN

bld.conf

BLD.CONF(5)							File Formats Manual						       BLD.CONF(5)

NAME

       bld.conf - Configuration file for BLD

DESCRIPTION

       bld.conf consists of lines used to set various configuration options for bld.  The lines are processed in order of appearance.  Options set
       via bld.conf are overriden by bld command line options.	If two lines assign different values to the same  variables,  the  last  is  used.
       Blank lines and lines beginning with a `#' are ignored.

       bld.conf lines have the following format:

	  variable = value

       variable can be on of the following:

       o      daemon: (0 or 1) fork to background or not.

       o      address: IP address to bind to.

       o      port: port to listen to.

       o      min_interval: minimum time interval before blacklisting.

       o      max_submissions: maximum submissions in time interval.

       o      ip_list_size: IP list size.

       o      blacklist_size: blacklist size.

       o      blacklist_expiration: blacklist expiration (seconds).

       o      log_level: log level.

       o      user: user to run as.

       o      group: group to run as.

       o      client_timeout: client idle timeout before closing connection (seconds).

       o      iplist_dump: file to dump IP list to.

       o      blacklist_dump: file to dump blacklist to.

       o      pid_filename: PID filename.

       o      acl_filename: ACL filename.

       o      whitelist_filename: whitelist filename.

       o      notifies_to: comma separated hosts (`hostname' or `hostname:port') to notify when a new address is inserted into the blacklist

NOTES

       You need to completely restart bld after any modification of this file.

FILES

       /etc/bld/bld.conf

SEE ALSO

       bld(8) bld_acl.conf(5) bld_whitelist.conf(5)

AUTHOR

       Olivier Beyssac <obld@r14.freenix.org>

								   October 2004 						       BLD.CONF(5)
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