3.awk的工作原理 (1)awk会接收一行作为输入,并将这一行赋给awk的内部变量$0(同时也是一个完整的列),每一行也可称为一个记录,行的边界是以换行符作为结束(表明:awk是一行一行的去处理文本的) (2)然后,刚刚读入的行被以:为分隔符分解成若干字段(或域),每个字段存储在已编号的变量中,编号从$1开始,最多达10...
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UnemploymentNAT. AVG. Search Homes for Sale IndexElephant HeadArizonaNational Income per capita$21,575$26,686$29,829 Median household income$43,409$51,340$55,322 Median income owner occupied$44,563$63,012$70,586 Median income renter occupied$0$35,905$35,192 ...
$0 Rock Dog (2016) Performer ("No Surprises") $60MM $3.7MM $9.4MM $23MM Take me with you (2016) (Short) - Composer (soundtrack), Music Whiskey Tango Foxtrot (2016) Performer ("Nude") $35MM $7.5MM $23MM $25MM How to Let Go of the World: and Love All the...
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Aruka Waiipu (2016) (Short) - Producer Living Dead with the Decays (2012) (Short) - Glen Hopkins The Door (2012) (Short) - Vincent Williams, Producer Handle with Care (Short) - Boss $0 The Resurrection of Queen Marie (Short) - Producer $200 IMDb...
tail -n 100 /var/log/syslog | awk '/ERROR/ {print $0; exit}' 1. 2. 3. 这个命令会显示syslog文件的最后100行中第一个包含"ERROR"的行,然后退出。这对于快速定位最近的错误非常有用。 结论 head和tail是Linux系统中两个非常实用的文本处理工具,它们以简洁而高效的方式帮助用户查看文件的开头和结尾部分...
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