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I hope this will anwer your query


awk 'NR==FNR{a[$1]=$1;next} {for(v in a){ print v","$0 | "sort -n -k1" }}' file1 file2

try this


xargs -L 2 < filename.txt

records_in_1_not_2.txt


join -t"," -1 1 -2 1 -v 1 <(sort -t "," file1) <(sort -t"," file2)



records_in_2_not_1.txt


join -t"," -1 1 -2 1 -v 2 <(sort -t "," file1) <(sort -t"," file2)...

try this


awk 'NR==1{;a=$0} NR>1{for(i=1;i<NF;i++) {v=$(i+1);r=$1;b=$0;$0=a;c=$i;$0=b;print r c":"v }; }' file

try this


awk 'NR%4==0{print "--------------";next;} {print} END{print "--------------"}' filename

try this
xargs -i sh -c './shscript {}' < parameters.txt

join -1 1 -2 2 <(sort -n -k1 1.tmp) <(sort -n -k2 1.res)

Code:
$ grep -f pattern_filename filename
where pattern_filename look like:
pattern1
pattern2
....
....
patternn

tr ',' '\n' < filename

hope this will help you.
awk -F"/" '{a="";for(i=1;i<=NF;i++){print a""$i;a=(a "-")}}' filename.txt

echo "1 2 3 3 2 1" | xargs -n 1 | awk '{a[$0]++} END{for(i in a) {print i , a[i]} }'

good to use

if grep -q <search text> <<<"$line"

if grep -q "CREATE TABLE" <<<"$line"
then
...
fi.

echo "1 2 3 4 5 6 7 9 12" | awk -v var=2 '{for(i=3;i<=NF;i=i+3) {$i= $i*var} }1'

With AWK
awk -vfile=abc.csv '{sub(/(\.csv|\.txt.).*$/,".txt",file);print file}' <<<""