1、格式化的文本内容

# head 2620.log

logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:12:37,902 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/PRMSL/18082620.084"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:12:40,683 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP_CHANGE_24H/850/18082620.087"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:12:41,326 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/PRMSL_CHANGE_24H/18082620.084"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:13,859 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP/925/18082620.090"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:13,987 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/HGT/925/18082620.090"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:14,238 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/RH/925/18082620.087"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:14,238 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/RH/925/18082620.084"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:14,361 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/SPFH/925/18082620.087"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:14,639 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/VVEL_GEOMETRIC/925/18082620.087"logs/mdfs-monitor.nwp.py.log.10:2018-08-27 01:14:15,221 - root - INFO - rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP/850/18082620.090"

2、从指定位置开始截取

# cut -c 72- 2620.log | head

rpush "filename:/nwp" "cassandra:/GRAPES_GFS/PRMSL/18082620.084"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP_CHANGE_24H/850/18082620.087"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/PRMSL_CHANGE_24H/18082620.084"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP/925/18082620.090"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/HGT/925/18082620.090"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/RH/925/18082620.087"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/RH/925/18082620.084"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/SPFH/925/18082620.087"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/VVEL_GEOMETRIC/925/18082620.087"rpush "filename:/nwp" "cassandra:/GRAPES_GFS/TMP/850/18082620.090"

3、截取参数说明

# cut --help

用法：cut [选项]... [文件]...Print selected parts of lines from each FILE to standard output.

Mandatory arguments to long options are mandatory for short options too.

-b, --bytes=列表 只选中指定的这些字节-c, --characters=列表 只选中指定的这些字符-d, --delimiter=分界符 使用指定分界符代替制表符作为区域分界-f, --fields=LIST select only these fields; also print any linethat contains no delimiter character, unlessthe -s option is specified-n with -b: don't split multibyte characters--complement 补全选中的字节、字符或域-s, --only-delimited 不打印没有包含分界符的行--output-delimiter=字符串 使用指定的字符串作为输出分界符，默认采用输入的分界符--help 显示此帮助信息并退出--version 显示版本信息并退出

仅使用f -b, -c 或-f 中的一个。每一个列表都是专门为一个类别作出的，或者您可以用逗号隔

开要同时显示的不同类别。您的输入顺序将作为读取顺序，每个仅能输入一次。每种参数格式表示范围如下：N 从第1 个开始数的第N 个字节、字符或域N- 从第N 个开始到所在行结束的所有字符、字节或域N-M 从第N 个开始到第M 个之间(包括第M 个)的所有字符、字节或域-M 从第1 个开始到第M 个之间(包括第M 个)的所有字符、字节或域

当没有文件参数，或者文件不存在时，从标准输入读取

GNU coreutils online help: <;

请向<; 报告cut 的翻译错误要获取完整文档，请运行：info coreutils 'cut invocation'