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Try this Third field move to last, if required in order can be done

awk -F"|" '(!a[$1"|"$2"|"$4]){a[$1"|"$2"|"$4]=$3;next}{if(a[$1"|"$2"|"$4] < $3){a[$1"|"$2"|"$4]=$3}}END{for( i in a) { print...

use touch command

Removed

what is the basis of desire result please explain.
i thought you need the missing lines.

awk 'NR==FNR{a[$0]++;next}(!a[$0])' hwlock.dep hwlock-full.dep > report.dep

awk -F"#" '{print $1}' filename

provide more input sample for further help

you can use the substitution example take the value in variable and use

${var/[//}

try this
cal 2013 | awk 'BEGIN{b[0]=3;b[1]=2;b[2]=1;b[3]=7;b[4]=6;b[5]=5;b[6]=4}($1 ~ /^S$/){x=1;mon1=p;getline;for(i=2;i<=NF;i++){if($i==1){a[x]=i;x++}};
...

one method can be to writer the script which look the modification time and if it is different from the last modified time then tail last four line of that log file into common log file.

your requiremnet is not clear. please explain with more sample data and also sample of actual data file.

what criteria you are following to split the file

try this your code with some modification

awk -F'\t' 'FNR==NR{a[$0]=1;next} {
n=split($6,b,",")
n1=split(b[1],c," ")
x=b[1]
b[1]=c[n1]
$6=""
for(i=1;i<=n;i++)
if(b[i] in a)
print $0,...

this error is because you are using
Trying to assign array to non-array

$6=c;


---------- Post updated at 05:41 PM ---------- Previous update was at 05:37 PM ----------

if your id tags...

awk '{a[NR]=$0;if(length>max) max=length}END{for(j=1;j<=max;j++){for(i=1;i<=NR;i++){printf "%s ",substr(a[i],j,1)};printf "\n"}}' filename

awk 'NF>0{x=$0;getline y;print x FS y}' filename

awk -F">" '{for(i=1;i<=NF;i++){split($i,b," ");if(i==1){x=b[1];y=b[2];continue}; print x" "y" "FS b[1];y=b[2]}}' filename

Try this as per your input file

dat1=$( date "+ %Y%m%d%H%M%S" )
awk -F"," -v dat="$dat1" '
NR==1{x=$0;next}
($3 ~ /GSM|LTE|UTMS/){
split($3,a," ");
if(!b[a[2]])
{...

awk '$9 ~ /^-/{print > "file1";next}{print > "file2"}' filename

awk 'NF>0{print $0","}' RS=, filename

try this

awk '/TR/{if($1 ~/^<TR/){f=1};if($1 ~ /^<\/TR/){f=0};print;next}(f==0&&NF>0){print "<TR sometext>";f=1}{print}' filename

check this if it is working for splitting into 10 files.
if this code is working i will further modify it for insertion of header in all the ten files.
One more thing in how many lines your header...

your entire input data will have same continuous row on column for or it can be anywhere in file

can you provide sample data of input and output for your requirement

please provide the sample input and required output