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How can the number of aliases be determined? Why zero aliases for test.png?

Please show some of your "disasters" for discussion.

Not sure I understand, but does this help:
FN="randomname.png"
for i in {1..10}; do P=$(( RANDOM * (${#FN} - 4) / 32768 )); T=${FN:P:1} ; echo ${FN:0:P}${T^}${FN:P+1}; done
raNdomname.png...

OK, let's try our luck. How about
awk -vSRC="/pictures/" -vTGT="/pictures/alias/" -vDQ='"' 'gsub (/<0(1|2)>/, _) {ORG = $0; next} {print "cp " DQ SRC ORG DQ, DQ TGT $0 DQ}' file4
cp...

For an adaption of the awk solution, try
awk -F\" '/="/ && /\.png/ {gsub("[? +]+", "_", $2)} 1' OFS=\" file

You seemed to want a sed solution:
sed '/\.png/ {h; s#^.*//##; s#[ +?]\+#_#g; x;...

fantastico!

awk -F\" '/="/ {gsub("[? +]+", "_", $2)} 1' OFS=\" xml

see update.

I don't quite follow/understand what you're trying to do and this is way too verbose, but...

awk "/$line/,/<!--begin_channel-->/" $1 | grep -v "$line" | grep -v '^<' > xxx

No. No. No. No way! The command that you say is not executed correctly on CYGWYN cannot possibly work on any Linux or CYGWIN system.

As long as there are no slash (/) characters in the file...

Your cygwin's bash and awk versions probably differ from Ubuntu's. The exact output including error messages would seriously help us help you!

would something like this be helpful?
awk -f tapi..awk channels.xml where tapi.awk is:

BEGIN {
srcD="/cygdrive/c/ProgramData/data/picons"
...

How about
awk '
{print " <channel id=\"" $0 "\">"
print " <display-name lang=\"it\">" $0 "</display-name>"
gsub (/ /, "_")
print " <icon...

Another solution using bash shell:

#!/bin/bash

while read chan
do
printf "<channel id=\"%s\">\n" "$chan"

printf " <display-name lang="it">%s</display-name>\n" "$chan"
...

It is not much clearer to me WHAT you really need in the end, but Don Cragun's analysis proves right when seeing your second sample input file.
You might want to safeguard your script by adding some...

YMMV:

awk -F'"' '{$(NF-3)=$(NF-1)}1' OFS='"' myFile

Assuming that you get the above diagnostic when running the script vgersh99 suggested:
awk -F'"' '{$(NF-3)=$(NF-1)}1' OFS='"' myFile
it is telling us that line number 2 in your input file (the one...

I have never heard of a linux command on Windows.

Are the files you want to merge on Windows or are they on a Linux system that you are accessing while you are logged into a Windows system?

Are...