假设要在 api.log.201707201830 文件中，(此文件的多个字段数据以不可见字符^A（键盘上按下Ctrl+V+A）分隔)，要输出第70个字段：
awk -F '^A' '{print $70}' api.log.201707201830
要判断第25个字段=9的数据，输出第70个字段：
awk -F '^A' '($25==9){print $70}' api.log.201707201830
如果判断的值是字符串，就要加双引号（此案例以x01分隔）
awk -F 'x01' '($1=="a17cdca4daa7a92e473dc1a532da5aaf"){print $1}' yumiad_event.2017072016
如果是判断多个条件，用&&连接
awk -F 'x01' '($1=="a17cdca4daa7a92e473dc1a532da5aaf" && $14==10026 && $13==8){print $1,$2,$5,$14,$13}' yumiad_event.2017072016
对于没有固定分隔符的数据，可以使用grep：
如下案例表示在下面格式的很大的日志文件中查找 cornID=xyz 并且 adType=8 并且 providerID=10026：
mediation/report_partner.php partnerID=10002&uuid=8b633a6e57060f841ffc35106472810a&cornID=a17cdca4daa7a92e473dc1a532da5aaf&versionID=-&channelID=-&deviceType=3&mac=9c%3A41%3A7c%3A76%3A44%3A20&deviceKey=356405052830313&time=1500537724706&os=android&netType=wifi&deviceNo=GT-N7108&language=zh_CN&longitude=-&latitude=-&planTime=1499323004&optimization=0&PLMN=46003&sdkver=160&rid=a8d3d425f883fce0e64bc25469890e84&androidID=75673d3aa19fb2ac&trans=abc%2Cdef%2Cghi&ad_list=%5B%7B%22clickArea%22%3A%7B%7D%2C%22result%22%3A%221%22%2C%22interfaceType%22%3A%22API%22%2C%22keyID%22%3A%22%22%2C%22action%22%3A%22request%22%2C%22pid%22%3A%2280cd137fd603fb5f0685020ae0092a9d%22%2C%22eventTime%22%3A%221500537724346%22%2C%22providerID%22%3A%2210026%22%2C%22adType%22%3A%222%22%7D%2C%7B%22clickArea%22%3A%7B%7D%2C%22result%22%3A%221%22%2C%22interfaceType%22%3A%22API%22%2C%22keyID%22%3A%22%22%2C%22action%22%3A%22response%22%2C%22pid%22%3A%2280cd137fd603fb5f0685020ae0092a9d%22%2C%22eventTime%22%3A%221500537724691%22%2C%22providerID%22%3A%2210026%22%2C%22adType%22%3A%222%22%7D%2C%7B%22clickArea%22%3A%7B%7D%2C%22result%22%3A%221%22%2C%22interfaceType%22%3A%22API%22%2C%22keyID%22%3A%22%22%2C%22action%22%3A%22exposure%22%2C%22pid%22%3A%2280cd137fd603fb5f0685020ae0092a9d%22%2C%22eventTime%22%3A%221500537724692%22%2C%22providerID%22%3A%2210026%22%2C%22adType%22%3A%222%22%7D%2C%7B%22clickArea%22%3A%7B%7D%2C%22result%22%3A%221%22%2C%22interfaceType%22%3A%22API%22%2C%22keyID%22%3A%22%22%2C%22action%22%3A%22round%22%2C%22pid%22%3A%2280cd137fd603fb5f0685020ae0092a9d%22%2C%22eventTime%22%3A%221500537724692%22%2C%22providerID%22%3A%2210026%22%2C%22adType%22%3A%222%22%7D%5D
查询命令：
cat api.2017072016.log | grep -i 'cornID=xyz' | grep -i 'adType=8' | grep -i 'providerID=10026'