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Full Discussion: How Select numbers from a line of text, and remove leading spaces?
Top Forums Shell Programming and Scripting How Select numbers from a line of text, and remove leading spaces? Post 302844262 by kcpoole on Sunday 18th of August 2013 02:43:35 AM
Old 08-18-2013
How Select numbers from a line of text, and remove leading spaces?
I have a text file with a line of text that contains numbers and text formatted into groups. I need to extract the number that can be either 1,2 or 3 digits long. Then write it to a variable, but i need to remove any leading spaces in the number first.

I can get the numbers out but how to remove the leading spaces?

My test file contents
Code:
"C 56","Home athletics center","LAC"
"D001","50M Run","50M"
"D003","100M Run","100M"

My Script so far that will pull out the 3 digit number after the first C, and write it to a variable centnum
this is only part of the entire script as the rest will locate only the first line containing the neccessary value

Code:
#!/bin/bash
#set initial variables
file="FILE.EXT"     # input filename

while read line
 do centnum=${line:2:3}                    # find 3 Chars in line
      centnam=$(echo $line | cut -d '"' -f4)    #Extract the Center Name from the file 

done <"$file"
echo D';'$centnum';'$centnam';;M;;' > MM_file.txt

the number in the output file needs to be just the significant digits and is a CSV so can be variable length.

I have tried using sed, but this just parses the entire file at once and I cannot process each line individually.

TIA
Ken
 

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LEARN ABOUT ULTRIX

gencat

gencat(1int)															      gencat(1int)

Name
       gencat - generate a formatted message catalog

Syntax
       gencat catalog_file [source_file ...]

Description
       The  command  takes  one or more message source files and either creates a new catalog or merges new message text into an existing catalog.
       You should use the extension for message text files (for example, ) and the extension for catalogs (for example, ) to  process  files  with
       the command.

       In  some  cases, a formatted message catalog exists that has the same name the one that is creating.  When this occurs, merges the messages
       from the source message catalogs into this existing formatted message catalog.  The command merges the source  message  catalogs  into  the
       formatted  message  catalog  in	the same manner as it merges a group of source message catalogs.  If a source message catalog contains the
       same set number or message number as a set or message in the formatted message catalog, the source  message  catalog  set  or  message  has
       precedence.  For example, if both the source and formatted message catalogs contain a message number 25, the message text for message 25 in
       the source message catalog replaces the message text in the formatted message catalog.  Thus, when source message catalogs are merged  with
       formatted message catalogs, the formatted catalogs are updated.

       If you do not specify a source file, the command accepts message source data from standard input.

       Numeric message source files are portable between X/Open systems.

       For information on the source format for messages files, see the Guide to Developing International Software.

Restrictions
       The command does not accept mnemonic identifiers.  You must run the command if you want to use mnemonic identifiers.

See Also
       extract(1int), mkcatdefs(1int), trans(1int), catgets(3int), catopen(3int), intro(3int), environ(5int)
       Guide to Developing International Software

																      gencat(1int)
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