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Full Discussion: Use of regular expression
Operating Systems Linux Fedora Use of regular expression Post 302927946 by Don Cragun on Sunday 7th of December 2014 08:30:07 PM
Old 12-07-2014
I don't understand why you were using -F: in your awk scripts when there aren't any colons in your filenames. Here are a couple of ways to do it; one using ls, awk, rm, and bash; and the other one just using bash and rm. Both are presented in readable format and in 1-liner format:
Code:
#!/bin/bash
echo 'ls | awk | bash:'
ls | awk '
/[0-9][.]dok$/ {
	match($0, "[0-9]*[.]dok$")
	printf("echo mv \"%s\" \"%s%s.doc\"\n", $0, substr($0, 1, RSTART-1),
		substr($0, RSTART, length($0) - RSTART - 3) + 1)
}' | bash
printf '\n\nbash/ksh built-ins:\n'
for f in *[0-9].dok
do	b=${f%.dok}
	s=${b##*[!0-9]}
	b=${b%%[[0-9]*}
	echo mv "$f" "$b$((s+1)).doc"
done
printf '\n\nls | awk | bash 1-liner:\n'
ls|awk '/[0-9][.]dok$/{match($0,"[0-9]*[.]dok$");printf("echo mv \"%s\" \"%s%s.doc\"\n",$0,substr($0,1,RSTART-1),substr($0,RSTART,length($0)-RSTART-3)+1)}'|bash
printf '\n\nbash/ksh built-ins 1-liner:\n'
for f in *[0-9].dok;do	b=${f%.dok};s=${b##*[!0-9]};b=${b%%[[0-9]*};echo mv "$f" "$b$((s+1)).doc";done

If you find one that prints the mv commands you want to execute, remove the echo shown in red to actually rename the files.

The parameter expansion extracting the sequence number from the pathname works as long as there is only one string of digits in the filenames being processed (just before the .dok). The ERE in the awk script doesn't have this limitation, but your description didn't indicate that there could be multiple strings of digits; so I assume both methods do what you need.

Neither of these will do what you want if there are leading zeros on the digit strings in your filenames (such as value0012.dok).
 

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COLORS(3)						   libbash colors Library Manual						 COLORS(3)

NAME
colors -- libbash library for setting tty colors. SYNOPSIS
colorSet <color> colorReset colorPrint [<indent>] <color> <text> colorPrintN [<indent>] <color> <text> DESCRIPTION
General colors is a collection of functions that make it very easy to put colored text on tty. The function list: colorSet Sets the color of the prints to the tty to COLOR colorReset Resets current tty color back to normal colorPrint Prints TEXT in the color COLOR indented by INDENT (without adding a newline) colorPrintN The same as colorPrint, but trailing newline is added Detailed interface description follows. Available colors: Green Red Yellow White The color parameter is non-case-sensitive (i.e. RED, red, ReD, and all the other forms are valid and are the same as Red). FUNCTIONS DESCRIPTIONS
colorSet <color> Sets the current printing color to color. colorReset Resets current tty color back to normal. colorPrint [<indent>] <color> Prints text using the color color indented by indent (without adding a newline). Parameters: <indent> The column to move to before start printing. This parameter is optional. If ommitted - start output from current cursor position. <color> The color to use. <color> The text to print. colorPrintN [<indent>] <color> The same as colorPrint, except a trailing newline is added. EXAMPLES
Printing a green 'Hello World' with a newline: Using colorSet: $ colorSet green $ echo 'Hello World' $ colorReset Using colorPrint: $ colorPrint 'Hello World'; echo Using colorPrintN: $ colorPrintN 'Hello World' AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <gil@ran4.net> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
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