mjhjmtu

I'm looking for a command to add a pattern before or the delimiter.

My sting:

1 |Chris|ubuntu

Here my delimiter is| and I want to generate a string with this input.

Output

1 = ID and Chris = Name and Ubuntu = OS

Sometimes, my input has 2 values only.
Let's say 2 | Ram, which has one value and no delimiter, so it should print:

2=ID and Ram=Name

So, field1 + "and" + field2 + "and" + field3. If field3 is not available in the input string then use field1 + "and" + field2.

awk -F '|' '
 printf("%d = ID and %s = Name", $1, $2) 
 NF == 3 printf(" and %s = OS", $3) 
 printf("n") ' file

This would generate

1 = ID and Chris = Name and ubuntu = OS
2 = ID and Ram = Name

for the given data. The awk code simply inserts the two first fields into the printf format template. If a third field is available, the OS part is then outputted on the same line. The line is then terminated by a newline.

In Bash:

#!/usr/bin/env bash

if [ "$#" -eq 0 ]
then
 printf "Missing argumentn" >&2
 exit 1
fi

num_of_delimiters="$(grep -o '|' <<< "$1" | wc -l)"
sting="$(sed -E 's,s+|,|,g' <<< "$1")"
sting="$(sed -E 's,|s+,|,g' <<< "$sting")"

case "$num_of_delimiters" in
 1)
 echo "$(cut -d '|' -f1 <<< "$sting")"=ID and "$(cut -d '|' -f2 <<< "$sting")"=Name
 ;;
 2)
 echo "$(cut -d '|' -f1 <<< "$sting")" = ID and "$(cut -d '|' -f2 <<< "$sting")" = Name and 
 "$(sed 's/./U&/' <<< "$(cut -d '|' -f3 <<< "$sting")")" = OS
 ;;
 *)
 printf "More than 2 delimiters or no delimitersn" >&2
 exit 2
esac

It will also print whitespaces as you showed in your example and will
convert the first letter of the third word to uppercase. Examples:

$ ./sting.sh "2 | Ram"
2=ID and Ram=Name
$ ./sting.sh "1 |Chris|ubuntu"
1 = ID and Chris = Name and Ubuntu = OS

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