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Full Discussion: Using rename
Top Forums UNIX for Dummies Questions & Answers Using rename Post 302894027 by wisecracker on Sunday 23rd of March 2014 07:35:20 AM
Old 03-23-2014
This is purely longhand to show a way of building up each line ready for use.
There are no loops nor the usage of the mv command.
It uses __builtins__ only and is step by step in the code shown/
It is a little tongue-in-cheek but shows the power of the shell.
OSX 10.7.5, default bash terminal.
Code:
#/bin/bash
echo "1977SSD_rsdIUIUYIU2345tst.pdf
1976SDP_rstdtYsr.pdf
1943FDT_rstt.pdf
1996DFF_stdstrd.pdf" > /tmp/text
# Save IFS for later.
ifs_str="$IFS"
IFS="
"
read -d '' -r text < /tmp/text
echo "$text"
# This is purely longhand using builtins; set up an array using newlines only as a separater...
arr=($text)
# First array.
length="${#arr[0]}"
echo "$length"
txt="_${arr[0]:4:3}"
echo "$txt"
rename="${arr[0]:0:4}${arr[0]:7:$[ ( $length - 11 ) ]}$txt${arr[0]:$[ ( $length - 4 ) ]:4}"
echo "$rename"
# Second array.
length="${#arr[1]}"
echo "$length"
txt="_${arr[1]:4:3}"
echo "$txt"
rename="${arr[1]:0:4}${arr[1]:7:$[ ( $length - 11 ) ]}$txt${arr[1]:$[ ( $length - 4 ) ]:4}"
echo "$rename"
# Third array would go here but this IS longhand so now work out any loops to automate it.
# Reset IFS to default...
IFS="$ifs_str"
exit 0

Results...
Code:
Last login: Sun Mar 23 11:23:38 on ttys000
AMIGA:barrywalker~> chmod 755 rename.sh
AMIGA:barrywalker~> ./rename.sh
1977SSD_rsdIUIUYIU2345tst.pdf
1976SDP_rstdtYsr.pdf
1943FDT_rstt.pdf
1996DFF_stdstrd.pdf
29
_SSD
1977_rsdIUIUYIU2345tst_SSD.pdf
20
_SDP
1976_rstdtYsr_SDP.pdf
AMIGA:barrywalker~> _

 

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PG_FETCH_ALL(3) 														   PG_FETCH_ALL(3)

pg_fetch_all - Fetches all rows from a result as an array

SYNOPSIS
array pg_fetch_all (resource $result) DESCRIPTION
pg_fetch_all(3) returns an array that contains all rows (records) in the result resource. Note This function sets NULL fields to the PHP NULL value. PARAMETERS
o $result - PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others). RETURN VALUES
An array with all rows in the result. Each row is an array of field values indexed by field name. FALSE is returned if there are no rows in the result, or on any other error. EXAMPLES
Example #1 PostgreSQL fetch all <?php $conn = pg_pconnect("dbname=publisher"); if (!$conn) { echo "An error occurred. "; exit; } $result = pg_query($conn, "SELECT * FROM authors"); if (!$result) { echo "An error occurred. "; exit; } $arr = pg_fetch_all($result); print_r($arr); ?> The above example will output something similar to: Array ( [0] => Array ( [id] => 1 [name] => Fred ) [1] => Array ( [id] => 2 [name] => Bob ) ) SEE ALSO
pg_fetch_row(3), pg_fetch_array(3), pg_fetch_object(3), pg_fetch_result(3). PHP Documentation Group PG_FETCH_ALL(3)
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