mirror of https://github.com/fengyuhetao/shell.git
22 lines
286 B
Bash
22 lines
286 B
Bash
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#!/bin/bash
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#多个空格只保留一个
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#sed '/./,/^$/!d' test
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#删除开头的空白行
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#sed '/./,$!d' test
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#删除结尾的空白行
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sed '{
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:start
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/^\n*$/{$d; N; b start}
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}' test
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#删除html标签
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#有问题
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#s/<.*>//g
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#sed 's/<[^>]*>//g' test1
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#sed 's/<[^>]*>//g;/^$/d' test1
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