Today, My coworker asked me how to combine the same line in one file. Here is my answer: 
cat tt.txt
a
a
b
c
c
b
123
3243
123
133
133

perl -mPerl6::Junction=all -lne 'our @c; print,push @c,$_ if $_ ne all
+(@c);' tt.txt

[download]
a little ugly, but works.


I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction

In reply to one line for combining line by xiaoyafeng

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