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ok, how about using find. To start with:

find . \( -name '*.org' -o -name '*.texi' \) | xargs head

How about:
echo ${#text1} ${#text2} | awk '$1*$2{a=b=$1;($1>$2)?a=$2:b=$2;print int(100/a*b)}'

a bit simpler - the order doesn't matter:

echo ${#text1} ${#text2} | awk '{a=b=$1;($1>$2)?a=$2:b=$2;print (100/a*b) }'

how about to start with - you can enhance it to match ONLY 6 or 8 chars (not 6 though 8 including 7) - left as an exercise:
grep -iE '^#[a-f0-9]{6,8}$' colours.txt

I don't follow... How creating a single script file will "create a lot more work" whether it gets run against one file/device or 50?
But if you insist:

#!/bin/ksh
awk '
{
idx=""
...

awk -F"," 'FNR==1{next}; ....'

what have you done so far and where exactly are stuck?
have you searched for similar threads in these fora?
have you checked the 10 More Discussions You Might Find Interesting at the bottom of this...

how about:

awk -F"'" 'FNR%2{f1=$0;next} {for(i=2;i<=NF;i+=2) print f1, $i}' myFile

how about:

awk '{print $1, substr($1,length($1)-1)}' OFS='\t' myInputFile

how about:

echo '<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />' | sed '/<Connector port="8009".*\/>/ s#.*#<!-- & -->#'

how about a little bit more "interesting" - with the menu:

#!/bin/bash

menu=$(fdisk -l | awk '/Device Boot/ {for(i=2;i<=NF;i++) print substr($i,1, index($i, " ")-1)}' RS= FS='\n';echo 'quit')
...

how about (a bit verbose):
awk -f san.awk myInputFile, where san.awk is:

BEGIN {
FS=OFS="\t"
i1=1
i2=2
v=3
}
function abs(x) { return x < 0 ? -x : x }

FNR>1 {
idx=($i1 >...

or better yet /tmp/a.sh:

#!/bin/bash
while IFS=, read f1 f2 junk
do
eval "$f2"
done < /tmp/a.txt


$ /tmp/a.sh
Filesystem Size Used Avail Use% Mounted on
C:/cygwin64 236G ...

either:

#!/bin/bash
a=$(df -kh|head -2)
echo "$a"

OR

#!/bin/bash
a='df -kh|head -2'
echo "$a"
eval "$a"

1st is preferred.

I'll leave it up to you to implement the shell wrapper script, but...
for the 3 fields (5,8 and 12) to be modified, awk should be called as:
awk -v fld='5,8,12' -f hsquared.awk myFile.csv

a bit verbose and can be simplified - just following your description.

awk -v fld='5,8' -f hsquared.awk myFile.csv
where hsquared.awk is:
BEGIN {
FS=OFS=","
fld=(!fld)?"5":fld
...

echo 'HiringManager_RHMC, DirectSupervisor_RHMC, ProcessServerReadAccess_ST' | awk -F, '$1=$1' OFS='\n'

how about for starters:
echo 'https://example.com/live-hls/bla:bob-sd-blabla/playlist.m3u8' | sed 's#.*:\([^-][^-]*\)-.*#\1#'

interesting puzzle!
Are you saying one has to "draw" an imaginary rectangle frame given the input coordinates?
I'm saying "imaginary", because the desired output coordinates are not in your input...

RudiC/rdrtx1,
the binning, the percentage and the totals are somewhat different from the OP's desired output in post #1.
Hence post #2 with the ask to elaborate.

it could helpful if you provided a sample (simple) file and the description what column(s) need to be extracted.
Also having a sample input AND a desired output would be helpful as well.

Please...

be careful... some awk's don't have NR available in the END block. Just reassign NR to nr in your "main" block and use it in the END.

YMMV:

sed 's/.*=\(.*\)$/\1/' myFile
awk -F= '{print $NF}' myFile

just to add another "hint": look at the bottom of this in the section titled: 10 More Discussions You Might Find Interesting

if you need to "fold" the lines at 60 char width, pipe the output to fold:
awk .... | fold -w 60