截取字符串

路人呵呵

文件名称:
backupset_db_ORADB_full_0_20131030_bbonnuj2.bak
backupset_db_ORADB_full_0_20131030_bconnuj2.bak
backupset_db_ORADB_full_0_20131030_bhonnumj.bak
求截取出backupset_db_ORADB_full_0_20131030这个字段?

Shell_HAT

1. ls *.bak | sed -r 's/(.*)_.*/\1/'

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关阴月飞

awk -vOFS=_ -F_ 'NF--' urfile

reyleon

1. grep -Po '.*(?=_.*)'

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dn833

1. [root@CentOS6-2 ~]# filename="backupset_db_ORADB_full_0_20131030_bbonnuj2.bak"
   
2. [root@CentOS6-2 ~]# echo ${filename%_*}
   
3. backupset_db_ORADB_full_0_20131030

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路人呵呵

回复 2# Shell_HAT


好用,谢谢