cat /etc/passwd |perl -e 'while (<>) {@a = split /:/, $_; @b = join " # ", @a; print "@b";}'
split格式为
split /分隔符/, 字符串;
join格式为
join “分隔符", 数组;
split格式为
split /分隔符/, 字符串;
join格式为
join “分隔符", 数组;
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