[SOLVED] Exec and sed commands

Issue

The question is how to combine the following commands in one line and use exec.

find . -name '*.txt' -exec sh -c 'echo "$(sed -n "\$p" "$1"),$1"' _ {} \;

The result: path and name of all .txt files.

find . -name '*.txt' -exec sed -n '/stringA/,/stringB/p' {} \;

The result: lines between start and end parameters over all .txt files.

The requested result: give me lines between start and end parameters. The first line must be contain path and name of the .txt file.

find . -name '*.txt' -exec ???? {} \;

./alpha/file01.txt

stringA

line1

line2

stringB

./beta/file02.txt

stringA

line1

line2

stringB

Thanks. T.

Solution

If the files are non-empty then all you need is:

find . -name '*.txt' -exec awk 'FNR==1{print FILENAME} /StringA/,/StringB/' {} +

If they can be empty then the simplest way to handle it is to use GNU awk for BEGINFILE:

find . -name '*.txt' -exec awk 'BEGINFILE{print FILENAME} /StringA/,/StringB/' {} +

Answered By - Ed Morton