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head和tail命令
vim Dockerfile
############################################################ #dckerfile to build mysql for mir container images # Based on Ubuntu # ############################################################ FROM 172.16.101.192/common/mysql:5.6 # File Author / Maintainer MAINTAINER huzhengbo #ADD mir_scalr.sql to container docker-entrypoint-initdb.d ADD analytics.sql /docker-entrypoint-initdb.d ADD scalr.sql /docker-entrypoint-initdb.d ADD keycloak.sql /docker-entrypoint-initdb.d ADD mirmon.sql /docker-entrypoint-initdb.d ADD mir_scalr.sql /docker-entrypoint-initdb.d ADD mir_pack.sql /docker-entrypoint-initdb.d ADD oneaa.sql /docker-entrypoint-initdb.d ADD one_log.sql /docker-entrypoint-initdb.d #the mysql port EXPOSE 3306
head得到头部6行
head -n +6 Dockerfile或head -n 6 Dockerfile
[root@localhost mysqlDockerfile]# head -n +6 Dockerfile ############################################################ #dckerfile to build mysql for mir container images # Based on Ubuntu # ############################################################ FROM 172.16.101.192/common/mysql:5.6 # File Author / Maintainer
删掉尾部2行（并没有从文件删除掉）
head -n -6 Dockerfile
############################################################ #dckerfile to build mysql for mir container images # Based on Ubuntu # ############################################################ FROM 172.16.101.192/common/mysql:5.6 # File Author / Maintainer MAINTAINER huzhengbo #ADD mir_scalr.sql to container docker-entrypoint-initdb.d ADD analytics.sql /docker-entrypoint-initdb.d ADD scalr.sql /docker-entrypoint-initdb.d ADD keycloak.sql /docker-entrypoint-initdb.d ADD mirmon.sql /docker-entrypoint-initdb.d
删除掉头部6行
tail -n +5 Dockerfile或tail -n 5 Dockerfile
FROM 172.16.101.192/common/mysql:5.6
# File Author / Maintainer
MAINTAINER huzhengbo
#ADD mir_scalr.sql to container docker-entrypoint-initdb.d
ADD analytics.sql /docker-entrypoint-initdb.d
ADD scalr.sql /docker-entrypoint-initdb.d
ADD keycloak.sql /docker-entrypoint-initdb.d
ADD mirmon.sql /docker-entrypoint-initdb.d
ADD mir_scalr.sql /docker-entrypoint-initdb.d
ADD mir_pack.sql /docker-entrypoint-initdb.d
ADD oneaa.sql /docker-entrypoint-initdb.d
ADD one_log.sql /docker-entrypoint-initdb.d
#the mysql port
EXPOSE 3306
得到尾部5行
tail -n -5 Dockerfile
ADD mir_pack.sql /docker-entrypoint-initdb.d ADD oneaa.sql /docker-entrypoint-initdb.d ADD one_log.sql /docker-entrypoint-initdb.d #the mysql port EXPOSE 3306
head和tail命令
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