Grep all content of File 1 from File 2 - shell

Question

This is regarding grepping all the Thread IDs which are mentioned in one file from the thread dump file in unix.
I also require at least 5 lines below each thread id from thread dump while grepping.
Like below:-
MAX_CPU_PID_TD_Ids.out:
1001
1003
MAX_CPU_PID_TD.txt:
............TDID=1001..................
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
............TDID=1002...................
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
...........TDID=1003......................
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Output should contain :-
............TDID=1001..................
Line 1
Line 2
Line 3
Line 4
Line 5
...........TDID=1003......................
Line 1
Line 2
Line 3
Line 4
Line 5
If possible I would like to have the above output in the mail body.
I have tried the below code but it sends me the thread IDs in the body with thread dump file as an attachment
How ever I would like to have the description of each thread id in the body of the mail only
JAVA_HOME=/u01/oracle/products/jdk
MAX_CPU_PID=`ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head -2 | sed -n '1!p' | awk '{print $1}'`
ps -eLo pid,ppid,tid,pcpu,comm | grep $MAX_CPU_PID > MAX_CPU_PID_SubProcess.out
cat MAX_CPU_PID_SubProcess.out | awk '{ print "pccpu: "$4" pid: "$1" ppid: "$2" ttid: "$3" comm: "$5}' |sort -n > MAX_CPU_PID_SubProcess_Sorted_temp1.out
rm MAX_CPU_PID_SubProcess.out
sort -k 2n MAX_CPU_PID_SubProcess_Sorted_temp1.out > MAX_CPU_PID_SubProcess_Sorted_temp2.out
rm MAX_CPU_PID_SubProcess_Sorted_temp1.out
awk '{a[i++]=$0}END{for(j=i-1;j>=0;j--)print a[j];}' MAX_CPU_PID_SubProcess_Sorted_temp2.out > MAX_CPU_PID_SubProcess_Sorted_temp3.out
rm MAX_CPU_PID_SubProcess_Sorted_temp2.out
awk '($2 > 15 ) ' MAX_CPU_PID_SubProcess_Sorted_temp3.out > MAX_CPU_PID_SubProcess_Sorted_Highest_Consuming.out
rm MAX_CPU_PID_SubProcess_Sorted_temp3.out
awk '{ print $8 }' MAX_CPU_PID_SubProcess_Sorted_Highest_Consuming.out > MAX_CPU_PID_SubProcess_Sorted_temp4.out
( echo "obase=16" ; cat MAX_CPU_PID_SubProcess_Sorted_temp4.out ) | bc > MAX_CPU_PID_TD_Ids_temp.out
rm MAX_CPU_PID_SubProcess_Sorted_temp4.out
$JAVA_HOME/bin/jstack -l $MAX_CPU_PID > MAX_CPU_PID_TD.txt
#grep -i -A 10 'error' data
awk 'BEGIN{print "The below thread IDs from the attached thread dump of OUD1 server are causing the highest CPU utilization. Please Analyze it further\n"}1' MAX_CPU_PID_TD_Ids_temp.out > MAX_CPU_PID_TD_Ids.out
rm MAX_CPU_PID_TD_Ids_temp.out
tr -cd "[:print:]\n" < MAX_CPU_PID_TD_Ids.out | mailx -s "OUD1 MAX CPU Utilization Analysis" -a MAX_CPU_PID_TD.txt <My Mail ID>

Answer 1

Answer for the first part: How to extract the lines.
The solution with grep -F -f MAX_CPU_PID_TD_Ids.out -A 5 MAX_CPU_PID_TD.txt as proposed in a comment is much simpler, but it may fail if the lines Line 1 etc can contain the values from MAX_CPU_PID_TD_Ids.out. It may also print a non-matching TDID= line if there are not enough lines after the previous matching line.
For the grep solution it may be better to create a file with patterns like ...TDID=1001....
The following script will print the matching lines ...TDID=XYZ... and at most the following 5 lines. It will stop after fewer lines if a new ...TDID=XYZ... is found.
For simplicity an empty line is printed before every ...TDID=XYZ... line, i.e. also before the first one.
awk 'NR==FNR {ids[$1]=1;next} # from the first file save all IDs as array keys
/\.\.\.TDID=/ {
sel = 0; # stop any previous output
id=gensub(/\.*TDID=([^.]*)\.*/,"\\1",1); # extract ID
if(id in ids) { # select if ID is present in array
print "" # empty line as separator
sel = 1;
}
count = 0; # counter to limit number of lines
}
sel { # selected for output?
print;
count++;
if(count > 5) { # stop after ...TDID= + 5 more lines (change the number if necessary)
sel = 0
}
}' MAX_CPU_PID_TD_Ids.out MAX_CPU_PID_TD.txt > MAX_CPU_PID_TD.extract
Apart from the first empty line, this script produces the expected output from the example input as shown in the question. If it does not work with the real input or if there are additional requirements, update the question to show the problematic input and the expected output or the additional requirements.
Answer for the second part: Mail formatting
To get the resulting data into the mail body you simply have to pipe it into mailx instead of specifying the file as an attachment.
( tr -cd "[:print:]\n" < MAX_CPU_PID_TD_Ids.out ; cat MAX_CPU_PID_TD.extract ) | mailx -s "OUD1 MAX CPU Utilization Analysis" <My Mail ID>