Specifying IFS delimiter in while loop Post: 302977713

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Top Forums Shell Programming and Scripting Specifying IFS delimiter in while loop Post 302977713 by SkySmart on Thursday 21st of July 2016 10:48:27 AM

07-21-2016

Registered User

Quote:

Originally Posted by RudiC

How about (bash!)

Code:

echo "${ALLMYDATA//#x#/ }" | while read -r line junk; do echo $junk, $line; done

this is ideal however, its not portable. some OSes dont have bash..i.e. sunos and aix.

---------- Post updated at 09:30 AM ---------- Previous update was at 09:28 AM ----------

Quote:

Originally Posted by rbatte1

If you are using bash, would you be better with this as your loop?:-

Code:

ALL_MY_DATA=$(sed 's/#x#/ /g' <<< $ALLMYDATA)                    # Replace the three characters with a space all through the record
for LINE in $ALL_MY_DATA
do
   echo $LINE
done

However it seems that you might only want the first field of each row. Is that right?

If so, then you could perhaps work on a variation of:-

Code:

while read LINE
do
   echo "${LINE%%#x#*}"                                          # Trim off everything after the first #x#
done <<< "$ALLMYDATA"

If you are using ksh we can work it out for that too.

I hope that this helps,
Robin

im not only looking for the first field. its just in the example i provided, the first field happened to be the field i was looking for. im going to be interested in all fields.

---------- Post updated at 09:48 AM ---------- Previous update was at 09:30 AM ----------

Quote:

Originally Posted by rbatte1

If you are using bash, would you be better with this as your loop?:-

Code:

ALL_MY_DATA=$(sed 's/#x#/ /g' <<< $ALLMYDATA)                    # Replace the three characters with a space all through the record
for LINE in $ALL_MY_DATA
do
   echo $LINE
done

However it seems that you might only want the first field of each row. Is that right?

If so, then you could perhaps work on a variation of:-

Code:

while read LINE
do
   echo "${LINE%%#x#*}"                                          # Trim off everything after the first #x#
done <<< "$ALLMYDATA"

If you are using ksh we can work it out for that too.

I hope that this helps,
Robin

Code:

ALL_MY_DATA=$(sed 's/#x#/ /g' <<< $ALLMYDATA)                    # Replace the three characters with a space all through the record
for LINE in $ALL_MY_DATA
do
   echo $LINE
done

this seems to work but it appears if the data contains an "x" it gets read of it and replaces it with a space.

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