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Eemaldame failist tühjad read ja tühjad realõpud

Posted by pj on
Erisuguses failipõhises andmetöötluses on tihti vaja failist välja visata tühjad read ja/või asjatud tühikud rea algusest ja lõpust. Kui oled Linuxi kasutaja, siis sed tuleb käsureal appi:

sed 's/^ //; s/ $//; /^$/d' miskifail.txt > miskiuusfail.txt

Lihtne selgitus:

  • miskifail.txt - algne fail
  • miskiuusfail.txt - töödeldud fail
  • `s/^ //` - eemaldame tühikud rea algusest
  • `s/ $//` - eemaldame tühikud rea lõpust
  • `/^$/d` - eemaldame tühjad read

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