shell问题 ！！！急
anhui1117
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1#
发表于 2007-12-06 21:27
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anhui1117
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1#
发表于 2007-12-06 21:27
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li-jiahuan
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2#
发表于 2007-12-06 23:03
复制内容到剪贴板
代码:awk -v str='sleep 2 &' '{ print $0; if (NR % 20 == 0) { print str } }' your_file或 cat your_file | while read line; do echo $line; ((++i % 20 == 0)) && echo 'sleep 2 &'; done 或 perl -lne ' print $_ . ( $. % 20 ? "" : "\nsleep 2 &" ) ' your_file 
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ArchieYao
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3#
发表于 2007-12-09 16:03
笨点的办法就
sed 'n;..(这里重复20次n;)..;i \sleep 2 &' yourfile  |