Simple AWK command 1

[kamasoni]

Hello,

I've got following command - ls | awk 'FS= "." { print $2$1 }'
Result:
K900048.SMA
SMAK900051
SMAK900053
SMAK900055

why first line is not sorted to SMAK900048?

Best regards,
Damian

 

[feherke]

Hi

Because you used [tt][navy]FS[/navy][teal]=[/teal][green]"."[/green][/tt] as pattern. Reading and parsing the input line is performed before the regular pattern-action pairs are executed, so before your code sets the field separator.

Either set the field separator in the special [tt]BEGIN[/tt] rule :

ls | awk '[b]BEGIN[/b][teal]{[/teal][navy]FS[/navy][teal]=[/teal][i][green]"."[/green][/i][teal]}{[/teal] [b]print[/b] [navy]$2$1[/navy] [teal]}[/teal]'

or use the interpreter's [tt]-F[/tt] option to set the field separator :

ls | awk -F "." '[teal]{[/teal] [b]print[/b] [navy]$2$1[/navy] [teal]}[/teal]'

Feherke.
feherke.github.io