Re^5: Delete a line from files

in reply to Re^4: Delete a line from files
in thread Delete a line from files

These are documented in perlvar

for $^I search perlvar for "inplace". This has to be prepared before opening the file
$/ (without caret), if you use English, you can call it $INPUT_RECORD_SEPARATOR - should be set before the first read operation

Update: the BEGIN block is necessary so that these assignments are executed before the implicit loop by the -p flag, see perlrun

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Re^6: Delete a line from files by Anonymous Monk on Oct 13, 2015 at 10:08 UTC
what is wrong with first opening the file with open and then setting those variables?	[reply]
Re^7: Delete a line from files by choroba (Cardinal) on Oct 13, 2015 at 10:27 UTC
It doesn't work. The diamond operator opens the file and reads from it at the same time, you can't first open the file and then set the variable. Check the difference yourself: `perl -pwe '$^I = ".bak"; s/[<>]/\|/g' file1 perl -pwe 'BEGIN { $^I = ".bak" } s/[<>]/\|/g' file2` [download] لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply] [d/l]

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