我们有以下文件：
more value.js
"\n#\n#\n# Licensed to the Apache Software Foundation (ASF) under one\n# or more contributor license agreements. See the NOTICE file\n# distributed with t his work for additional information\n# regarding copyright ownership. The ASF licenses this file\n# to you under the Apache License, Version 2.0 (the\n# \ "License\"); you may not use this file except in compliance\n# with the License. You may obtain a copy of the License at\n#\n# http://www.apache.org/lic enses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing,\n# software distributed under the License is distributed on an\n# \"AS I S\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\n# KIND, either express or implied. See the License for the\n# specific language governing permissions and limitations\n# under the License.\n#\n#\n#\nkafka.logs.dir=logs\n\nlog4j.rootLogger=INFO, stdout\n\nlog4j.appender.stdout=org.apache.log4j.ConsoleAppen der\nlog4j.appender.stdout.layout=org.apache.log4j.PatternLayout\nlog4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n\n\nlog4j.appender.kafkaA ppender=org.apache.log4j.DailyRollingFileAppender\nlog4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH\nlog4j.appender.kafkaAppender.File=${kafka.log s.dir}/server.log\nlog4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout\nlog4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c )%n\n\nlog4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender\nlog4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH\nlog4j .appender.stateChangeAppender.File=${kafka.logs.dir}/state-change.log\nlog4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout\nlog4j.appe nder.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n\n\nlog4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender\nlog4j.appe nder.requestAppender.DatePattern='.'yyyy-MM-dd-HH\nlog4j.appender.requestAppender.File=${kafka.logs.dir}/kafka-request.log\nlog4j.appender.requestAppender. layout=org.apache.log4j.PatternLayout\nlog4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n\n\nlog4j.appender.cleanerAppender=org.apac he.log4j.DailyRollingFileAppender\nlog4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH\nlog4j.appender.cleanerAppender.File=${kafka.logs.dir}/log-c leaner.log\nlog4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout\nlog4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n \n\nlog4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender\nlog4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH\nlog4j.appe nder.controllerAppender.File=${kafka.logs.dir}/controller.log\nlog4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout\nlog4j.appender.cont rollerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n\n\n# Turn on all our debugging info\n#log4j.logger.kafka.producer.async.DefaultEventHandler=DEBUG , kafkaAppender\n#log4j.logger.kafka.client.ClientUtils=DEBUG, kafkaAppender\n#log4j.logger.kafka.perf=DEBUG, kafkaAppender\n#log4j.logger.kafka.perf.Produ cerPerformance$ProducerThread=DEBUG, kafkaAppender\n#log4j.logger.org.I0Itec.zkclient.ZkClient=DEBUG\nlog4j.logger.kafka=INFO, kafkaAppender\nlog4j.logger. kafka.network.RequestChannel$=WARN, requestAppender\nlog4j.additivity.kafka.network.RequestChannel$=false\n\n#log4j.logger.kafka.network.Processor=TRACE, r equestAppender\n#log4j.logger.kafka.server.KafkaApis=TRACE, requestAppender\n#log4j.additivity.kafka.server.KafkaApis=false\nlog4j.logger.kafka.request.log ger=WARN, requestAppender\nlog4j.additivity.kafka.request.logger=false\n\nlog4j.logger.kafka.controller=TRACE, controllerAppender\nlog4j.additivity.kafka.c ontroller=false\n\nlog4j.logger.kafka.log.LogCleaner=INFO, cleanerAppender\nlog4j.additivity.kafka.log.LogCleaner=false\n\nlog4j.logger.state.change.logger =TRACE, stateChangeAppender\nlog4j.additivity.state.change.logger=false"
通过以下技巧，我们可以将“\n”转换为新行并创建文件.txt
var=` cat value.js `
echo -e "$var" | tee -a /tmp/file.txt
"
#
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# \"License\"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
#
#
kafka.logs.dir=logs
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.kafkaAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.kafkaAppender.File=${kafka.logs.dir}/server.log
log4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.stateChangeAppender.File=${kafka.logs.dir}/state-change.log
log4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.requestAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.requestAppender.File=${kafka.logs.dir}/kafka-request.log
log4j.appender.requestAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.cleanerAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.cleanerAppender.File=${kafka.logs.dir}/log-cleaner.log
log4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.controllerAppender.File=${kafka.logs.dir}/controller.log
log4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.controllerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
# Turn on all our debugging info
#log4j.logger.kafka.producer.async.DefaultEventHandler=DEBUG, kafkaAppender
#log4j.logger.kafka.client.ClientUtils=DEBUG, kafkaAppender
#log4j.logger.kafka.perf=DEBUG, kafkaAppender
#log4j.logger.kafka.perf.ProducerPerformance$ProducerThread=DEBUG, kafkaAppender
#log4j.logger.org.I0Itec.zkclient.ZkClient=DEBUG
log4j.logger.kafka=INFO, kafkaAppender
log4j.logger.kafka.network.RequestChannel$=WARN, requestAppender
log4j.additivity.kafka.network.RequestChannel$=false
#log4j.logger.kafka.network.Processor=TRACE, requestAppender
#log4j.logger.kafka.server.KafkaApis=TRACE, requestAppender
#log4j.additivity.kafka.server.KafkaApis=false
log4j.logger.kafka.request.logger=WARN, requestAppender
log4j.additivity.kafka.request.logger=false
log4j.logger.kafka.controller=TRACE, controllerAppender
log4j.additivity.kafka.controller=false
log4j.logger.kafka.log.LogCleaner=INFO, cleanerAppender
log4j.additivity.kafka.log.LogCleaner=false
log4j.logger.state.change.logger=TRACE, stateChangeAppender
log4j.additivity.state.change.logger=false"
我的问题是如何转换回文件.txt之前的格式为值.js文件 ？
答案1
echo您可以使用JSON 解析工具来代替jq：
jq -r . < file.js > file.txt
"它还具有移除包围并将其变成\"的优点"。
要转换回 JSON 字符串：
jq -Rs . < file.txt > newfile.js
对于有关将换行符转换为 的更一般问题\n，您可以使用perl：
perl -pe 's/\n/\\n/'
sed 's/\n/\\n/'perl记录中包括尾随换行符s，但不包括sed。