script to remove the lines which are having the duplicate value in 2 fields
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script to remove the lines which are having the duplicate value in 2 fields
How to write a script to remove the lines which are having the duplicate value in 1st field and last field and redirect to another file, the file name should have the current time stamp.
#!/bin/bash
file=$1
while read line
do
len=`echo ${#line}`
name1=`echo "${line:0:1}"`
name2=`echo "${line:$len-1:$len}"`
if [ $name1 == $name2 ]
then
echo $line >> temp
touch temp
fi
done < $file
Run this as follows :
sh filename.sh /path/to/the/file/where/pattern/is/store
i guess the codes u ppl have posted is fore comparing values in de first n last fields...i wat to delete records based on duplicate values in de first field and also based on last field...many thanks for ppl who ve been helping
i guess the codes u ppl have posted is fore comparing values in de first n last fields...i wat to delete records based on duplicate values in de first field and also based on last field...many thanks for ppl who ve been helping
Wot u "duplicate values in de first field"? Field wi XX wd hv dup X. K?
for this sample data, i need the last 2 rows removed as the value in the first field ("abc" and "ghi") are already present in the previous scanned rows. Further more, i need the 3rd and lst row removed as the values present in the last field ("ccc" and "fff") are duplicates.
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