linux - Why sed yields two same line? -


i wanted replace 1 line using sed, got 2 same lines:

$ sed '50s/false/true/p' ./src/com/android/quicksearchbox/searchablesource.java >searchablesource.java.1    $ diff searchablesource.java.1 ./src/com/android/quicksearchbox/searchablesource.java 50,51c50 <     private static final boolean dbg = true; <     private static final boolean dbg = true; --- >     private static final boolean dbg = false;

why? how wanted?

the p @ end means "print". told sed print line after successful substitution. sed prints each line (if not told not -n) anyway. have not told wanted, either remove final p or specify -n option.


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