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Top Forums Shell Programming and Scripting updating a file with sed -help Post 302567885 by dboward on Tuesday 25th of October 2011 11:13:40 AM
Old 10-25-2011
updating a file with sed -help

I have a file of records all made up of single charactors that need to be updated using their row/column

(the dashes represent spaces as the html formatting of this text box when it posts removes the "nonessential" white space between the charactors)

file example
Code:
A  1  c
B  2  b
C  3  a

to change row 2, column 2 to "5" would look something like this correct?

Code:
sed -i -e '2s/?/5/2' FILENAME

two questions: What would I have to put in the "find" section to correctly replace a non-blank charactor with the "replace" section and how could I pass variables into each of the R/C/replace sections as
Code:
sed -i -e "$Rs/?/$U/$C" FILENAME

doesnt work
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 10-25-2011 at 12:25 PM.. Reason: code tags, please!
 

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ODBC_SPECIALCOLUMNS(3)							 1						    ODBC_SPECIALCOLUMNS(3)

odbc_specialcolumns - Retrieves special columns

SYNOPSIS
resource odbc_specialcolumns (resource $connection_id, int $type, string $qualifier, string $owner, string $table, int $scope, int $nullable) DESCRIPTION
Retrieves either the optimal set of columns that uniquely identifies a row in the table, or columns that are automatically updated when any value in the row is updated by a transaction. PARAMETERS
o $connection_id -The ODBC connection identifier, see odbc_connect(3) for details. o $type - When the type argument is SQL_BEST_ROWID, odbc_specialcolumns(3) returns the column or columns that uniquely identify each row in the table. When the type argument is SQL_ROWVER, odbc_specialcolumns(3) returns the column or columns in the specified table, if any, that are automatically updated by the data source when any value in the row is updated by any transaction. o $qualifier - The qualifier. o $owner - The owner. o $table - The table. o $scope - The scope, which orders the result set. o $nullable - The nullable option. RETURN VALUES
Returns an ODBC result identifier or FALSE on failure. The result set has the following columns: oSCOPE oCOLUMN_NAME oDATA_TYPE oTYPE_NAME oPRECISION oLENGTH oSCALE oPSEUDO_COLUMN PHP Documentation Group ODBC_SPECIALCOLUMNS(3)
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