Now, I want to take the first field (file size) and second field (filename) and want to run my own copy file utility.
Example: From the above list.
First i want to take $1 as 2000003072
Second i want to take $2 as ABC.pf
then want to run a for loop based on the list that contains the file names from above output i.e. (ABC.pf DEF.pf GHI.pf...)
Example:
Code:
For i in ABC.pf DEF.pf GHI.pf...
do
my code which will take filename (as $i) and then the corresponding file size , filesize may differ)
echo "Completed $i"
done
OR
Please let me know, if WHILE loop will be more easier and robust in these cases ??? Because i need to copy the binary files as well. little mistake will corrupt the file and can result in data loss.
---------- Post updated at 06:21 PM ---------- Previous update was at 06:07 PM ----------
I guess i found the way.
Code:
ls -ltr *.pf |awk '{print $5, $9}' | while read SIZE NAMES; do echo "size is $SIZE , and name is $NAMES"; < My code> ; done
Please do let me know if any other possible solution as well.
Last edited by Franklin52; 06-02-2010 at 03:23 AM..
Reason: Please use code tags!
awk is huge progam to use in this kind of small parser. It's always better to use builtin properties, if possible.
Parse using read:
Code:
ls -ltr *.pf | while read f1 f2 f3 f4 SIZE f6 f7 f8 NAMES
do
...
done
Parse using array:
Code:
ls -ltr *.pf | while read line
do
flds=($line) #parse line to array flds using delimiters which are defined in variable IFS
SIZE="${flds[4]}" # 0=1st fld
NAMES="${flds[8]}"
numOfFlds=${#flds[@]}
...
done
so i've been used to doing it this way:
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