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Top Forums Shell Programming and Scripting cut a string in a textfile line per line Post 302313485 by izuma on Tuesday 5th of May 2009 08:57:00 PM
Old 05-05-2009
Quote:
Originally Posted by vgersh99
given your sample tmp2.txt:

Code:
BAC0904102604 -> BAC
AFR0904102604 -> AFR
HHF0904102604 -> HHF
UI100904102907 ->UI10
sdf_ada_9541-9543.1 -> sdf_ada
_fsf13145533 -> fsf

and myTextFile:
Code:
BAC0904102604foo
AFR0904102604bar fred
sdf_ada_9541-9543.1foo
HHF0904102604function
UI100904102907brick
sdf_ada_9541-9543.1red
_fsf13145533black
BAC0904102604yellow
sdf_ada_9541-9543.1fred

nawk -f izuma.awk tmp2.txt myTextFile
Code:
FNR==NR { arr[$1]=$3; next }
{
  for( i in  arr)
     sum[arr[i]]+=gsub("^" i, arr[i])
}
END {
  for (i in sum)
    printf("[%s] -> [%d]\n", i, sum[i])
}

could you provide an explanation? :P

i was considering using regex for this but dont know how
 

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PG_FETCH_ARRAY(3)														 PG_FETCH_ARRAY(3)

pg_fetch_array - Fetch a row as an array

SYNOPSIS
array pg_fetch_array (resource $result, [int $row], [int $result_type = PGSQL_BOTH]) DESCRIPTION
pg_fetch_array(3) returns an array that corresponds to the fetched row (record). pg_fetch_array(3) is an extended version of pg_fetch_row(3). In addition to storing the data in the numeric indices (field number) to the result array, it can also store the data using associative indices (field name). It stores both indicies by default. Note This function sets NULL fields to the PHP NULL value. pg_fetch_array(3) is NOT significantly slower than using pg_fetch_row(3), and is significantly easier to use. PARAMETERS
o $result - PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others). o $row - Row number in result to fetch. Rows are numbered from 0 upwards. If omitted or NULL, the next row is fetched. o $result_type - An optional parameter that controls how the returned array is indexed. $result_type is a constant and can take the following values: PGSQL_ASSOC, PGSQL_NUM and PGSQL_BOTH. Using PGSQL_NUM, pg_fetch_array(3) will return an array with numerical indices, using PGSQL_ASSOC it will return only associative indices while PGSQL_BOTH, the default, will return both numerical and associa- tive indices. RETURN VALUES
An array indexed numerically (beginning with 0) or associatively (indexed by field name), or both. Each value in the array is represented as a string. Database NULL values are returned as NULL. FALSE is returned if $row exceeds the number of rows in the set, there are no more rows, or on any other error. EXAMPLES
Example #1 pg_fetch_array(3) example <?php $conn = pg_pconnect("dbname=publisher"); if (!$conn) { echo "An error occurred. "; exit; } $result = pg_query($conn, "SELECT author, email FROM authors"); if (!$result) { echo "An error occurred. "; exit; } $arr = pg_fetch_array($result, 0, PGSQL_NUM); echo $arr[0] . " <- Row 1 Author "; echo $arr[1] . " <- Row 1 E-mail "; // As of PHP 4.1.0, the row parameter is optional; NULL can be passed instead, // to pass a result_type. Successive calls to pg_fetch_array will return the // next row. $arr = pg_fetch_array($result, NULL, PGSQL_ASSOC); echo $arr["author"] . " <- Row 2 Author "; echo $arr["email"] . " <- Row 2 E-mail "; $arr = pg_fetch_array($result); echo $arr["author"] . " <- Row 3 Author "; echo $arr[1] . " <- Row 3 E-mail "; ?> SEE ALSO
pg_fetch_row(3), pg_fetch_object(3), pg_fetch_result(3). PHP Documentation Group PG_FETCH_ARRAY(3)
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