Perl终端中的输入和输出文件

Question

Please something wrong in this code, in input and output, i don't know how i can correct this code:

echo < in.txt | perl -CS -pe 's/[\x{0830}-\x{\x{9000}]+//g  > out.txt

The problem how i can import in.txt and export out.txt .

In sed it's easy like this

sed < in.txt > out.txt

Answer 1

• echo doesn't read from STDIN.
• You have an unmatched ' .
• \\x{\\x{9000} should be \\x{9000} .
• The range of characters you are removing is very peculiar, and surely incorrect. It starts in the middle of a seemingly arbitrary block, and it includes a huge swath of space that's not just unassigned, but not part of any blocks. I'm unable to fix this without more information.

Fixed:

perl -CS -pe's/[\x{0830}-\x{9000}]+//g' <in.txt >out.txt

or just

perl -CS -pe's/[\x{0830}-\x{9000}]+//g' in.txt >out.txt

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See also: Specifying file to process to Perl one-liner