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Full Discussion: Function into a condition ?
Top Forums Shell Programming and Scripting Function into a condition ? Post 302782717 by Corona688 on Tuesday 19th of March 2013 11:15:40 AM
Old 03-19-2013
${DATE:0:1} that's a substring operator -- the variable, the offset, and the length. An offset of 0 and length of 1 gets the first character.

To only process valid lines:
Code:
valid () { 
...
}

process() {
...
}

while read DATE HH MM
do
        [ "${DATE:0:1}" = "#" ] && continue # Ignore comments
        [ -z "$DATE" ] && continue # Ignore blank lines
        if ! valid $DATE $HH $MM # Ignore invalid lines
        then
                echo "$DATE $HH $MM is invalid"
                continue
        fi

        process $DATE $HH $MM
done < inputfile

This User Gave Thanks to Corona688 For This Post:
amazigh42
 

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LEARN ABOUT MOJAVE

dbix::class::storage::dbi::informix5.18

DBIx::Class::Storage::DBI::Informix(3)			User Contributed Perl Documentation		    DBIx::Class::Storage::DBI::Informix(3)

NAME

       DBIx::Class::Storage::DBI::Informix - Base Storage Class for Informix Support

DESCRIPTION

       This class implements storage-specific support for the Informix RDBMS

METHODS

   connect_call_datetime_setup
       Used as:

	 on_connect_call => 'datetime_setup'

       In connect_info to set the "DATE" and "DATETIME" formats.

       Sets the following environment variables:

	   GL_DATE="%m/%d/%Y"
	   GL_DATETIME="%Y-%m-%d %H:%M:%S%F5"

       The "DBDATE" and "DBCENTURY" environment variables are cleared.

       NOTE: setting the "GL_DATE" environment variable seems to have no effect after the process has started, so the default format is used. The
       "GL_DATETIME" setting does take effect however.

       The "DATETIME" data type supports up to 5 digits after the decimal point for second precision, depending on how you have declared your
       column. The full possible precision is used.

       The column declaration for a "DATETIME" with maximum precision is:

	 column_name DATETIME YEAR TO FRACTION(5)

       The "DATE" data type stores the date portion only, and it MUST be declared with:

	 data_type => 'date'

       in your Result class.

       You will need the DateTime::Format::Strptime module for inflation to work.

AUTHOR

       See "AUTHOR" in DBIx::Class and "CONTRIBUTORS" in DBIx::Class.

LICENSE

       You may distribute this code under the same terms as Perl itself.

perl v5.18.2							    2013-12-16				    DBIx::Class::Storage::DBI::Informix(3)
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