Re^2: replace fist and last occurrences of N

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Re^3: replace fist and last occurrences of N by massa (Hermit) on Jul 12, 2008 at 15:27 UTC
`shell$ perl -pi.bak -le 's/(?<=[^n])n\|n(?=[^n])/^/ig' yourfile.txt` [download] will do the substitution and leave a backup file named yourfile.txt.bak UPDATE: it will not work, because your file has newlines (somehow I missed it). Try this instead: `perl -pi.bak -0377 -e 's/n([n\n]*)n/^$1^/ig' yourfile.txt` [download] []s, HTH, Massa	[reply] [d/l] [select]