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@Srinishoo:
The variable limitation is not in awk, nor is it a limitation of the shell, but rather an OS limitation determined by the configuration variable ARG_MAX ( getconf ARG_MAX ) .

This is a small program as a tester for a basic sweep generator for bandwidth testing of AudioScope.sh.

This DEMO is only capable of 4KHz down to about 85Hz and back due to the low bit rate, but...

If the digits are on the same line, you can use grep
if echo 123 | grep '\(.\).*\1' >/dev/null; then echo "Non-unique"; else echo "unique"; fi
if echo 112 | grep '\(.\).*\1' >/dev/null; then echo...

awk:
awk '{A[$1]=$2; for(i in A)if(!(i~"(^|\\+)" $1 "$")){c=i"+"$1; A[c]=A[i]+$2; print c, A[c]}}' FS=\| OFS=\| file

-- multiline --
awk '
{
A[$1]=$2
for(i in A) if(!(i~"(^|\\+)" $1...

Instead of just removing the lock file, you might want to determine whether or not the script is still running.

A fairly common way to do this is to have the script that creates the lock file...

Depending on your shell, might do:DB_SID_SM=/opt/${DB_SID,,}/TEST/somepath

This is a little bit simpler than SriniShoo's script and seems to do what was requested (but it doesn't print the trailing spaces that were included in the expected results shown in the 1st message...

There's no need for two substitute commands in the sed command. It can be done with one as in:
sed 's/ *| */|/g' "$FILE" > "$FLAT_FILE"

You would make your life easier if you didn't put spaces in filenames (like File 2), the filename fiel1 looks like a typo, and your output show lines matching cn=xyz, but the corresponding line in...

With a million files to be removed, xargs rm will not remove all of the files in one invocation of rm. Furthermore, if any of the files to be removed have names containing whitespace characters,...

You also need to go back to single quotes (or do some more escaping) so you can use awk's interpretation of $0 instead of the shell's interpretation of $0. And, if a line could every be a string...