how to print variables after each file with awk

Question

Expanding on Print the last line of a file, from the CLI

I'm calling awk and passing * to process all files in the folder, but can't seem to figure out how to dump my variables after each file.

The END keyword seems to run only after all files have completed:
- awk -F"'" '/export const/ { print $0 } END { print "done" }' *
- awk -F"'" '/export const/ { CLSNM = $0 } END {print CLSNM }' *
And these don't fire at all (no output):
- awk -F"'" '/export const/ { CLSNM = $0 } NR==filesize { print CLSNM }' *
- awk -F"'" '/export const/ { CLSNM = $0 } NR==LNR { print CLSNM }' *

I'm on MacOS using GNU Awk 5.1.0, API: 3.0 (GNU MPFR 4.1.0, GNU MP 6.2.1)

RavinderSingh13 · Accepted Answer · 2021-08-06 17:52:46Z

4

Action you are looking to be done should be covered with ENDFILE, try following code once. This is a GNU awk option, should work for your shown versioned of awk.

awk -F"'" '/export const/ { CLSNM = $0 } ENDFILE{ print CLSNM;CLSNM="" }' *

2nd solution: without EBNDFILE option try following, should work with any awk version.

awk -F"'" 'FNR==1 && CLSNM{ print CLSNM; CLSNM=""} /export const/ { CLSNM = $0 } END{if(CLSNM){print CLSNM}}' *

edited Aug 6, 2021 at 17:52

answered Aug 6, 2021 at 13:56

RavinderSingh13

135k14 gold badges61 silver badges100 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Adam Smooch Over a year ago

conversely, BEGINFILE also turned out to be useful!

Collectives™ on Stack Overflow

how to print variables after each file with awk

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related