如果只能用正则匹配，该怎么弄？

LIerWx

1. root     25622     1  0 00:15 pts/2    00:00:21 //bin/java -Djava.util.logging.config.file=/usr/local/apache-tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/apache-tomcat/endorsed -classpath /usr/local/apache-tomcat/bin/bootstrap.jar:/usr/local/apache-tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/apache-tomcat -Dcatalina.home=/usr/local/apache-tomcat -Djava.io.tmpdir=/usr/local/apache-tomcat/temp org.apache.catalina.startup.Bootstrap start

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最后是匹配到-Dcatalina.home=后面的路径/usr/local/apache-tomcat
请问该如何匹配

webdna

moperyblue

1. grep -oP '\-Dcatalina.home=\K\S*'

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LIerWx

回复 3# moperyblue

不用perl可以匹配出来吗

moperyblue

回复 4# LIerWx

是shell中的grep命令

1. echo 'root     25622     1  0 00:15 pts/2    00:00:21 //bin/java -Djava.util.logging.config.file=/usr/local/apache-tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/apache-tomcat/endorsed -classpath /usr/local/apache-tomcat/bin/bootstrap.jar:/usr/local/apache-tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/apache-tomcat -Dcatalina.home=/usr/local/apache-tomcat -Djava.io.tmpdir=/usr/local/apache-tomcat/temp org.apache.catalina.startup.Bootstrap start'|grep -oP '\-Dcatalina.home=\K\S*'

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fh21_xuejinlian

grep -oP '(?<= -Dcatalina.home=)[^ ]*'  

LIerWx

回复 5# moperyblue

多谢大神

StarWingsss

awk -vRS=" " -vFS="=" '$1~/-Dcatalina.home/{print $2}' file

sunzhiguolu

1. perl -nle 'print $1 if(/-Dcatalina\.home=(\S+)/)' f

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jcdiy0601

1. grep -o '\-Dcatalina.home=[^ ]*'

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