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I use ksh and bash; not csh. And, I strongly prefer utilities that accept, but do not require, space between an option-letter and its option-argument. But, if I understand what you're trying to do,...

In bourne shell:

IFS=","
X="Session,Date,Type,Receive Coil Name,Manufacturer,Manufacturer's Model Name"

for VAR in $X
do
echo $VAR
done

This is very similar to your previous thread. Is there a theme developing, or shall we continue in dribs and drabs?


# X=1:2:3 ...

Will it be only numbers and _? Try this...
echo $x | sed 's/.*ROI_\([0-9][0-9_]*\)_.*/\1/'

--ahamed

This one will return nothing if there is no match
sed -n 's/.*ROI_\(.*\)_AND_mod.*/\1/p'If the _mod is not a constant one must use a restriction on the matching part in brackets:
sed -n...

Use printf "%04d" with the value from the file.

awk '{printf("%04d\n", $0)}' input.txt

This is awk - shell does not matter that much.


awk '{ for(i=1 ; i<=NF; i++) { $i*=$i }
print $0
}' somefile > anotherfile

awk ' { for(i=1;i<=NF;i++) $i=($i*$i); print; } ' infile

Instead of $t += $t, $t *= $t.

Greetings.

Is your goal to just remove the quotes from around the letter A?

This would accomplish that by removing any non-alpha characters.


echo $x | sed 's/[^A-Za-z]//g'

Only quotes?
sed "s/['\"]//g"
or only around the value?
sed "s/^['\"]*//; s/['\"]*$//"

bash/ksh93:
echo "${x//[\"\']}"

Or more funny :
echo $x | sed 's/""*/"/g;s/.*"\(.*\)".*/\1/'

# echo '"""""""""""""""A"""' | sed 's/""*/"/g;s/.*"\(.*\)".*/\1/'
A