以下脚本将隐藏在日志文件中的SQL命令以及其他几个＆＃34;标记＆＃34;：
着色red="\x1b[31m"
green="\x1b[32m"
yellow="\x1b[33m"
blue="\x1b[34m"
white="\x1b[37m"
BLACK="\x1b[30;1m"
RED="\x1b[31;1m"
GREEN="\x1b[32;1m"
YELLOW="\x1b[33;1m"
BLUE="\x1b[34;1m"
CYAN="\x1b[36;1m"
WHITE="\x1b[37;1m"
onred="\x1b[41m"
lblack="\x1b[90m"
lred="\x1b[91m"
lgreen="\x1b[92m"
lyellow="\x1b[93m"
lblue="\x1b[94m"
lmagenta="\x1b[95m"
lcyan="\x1b[96m"
lwhite="\x1b[97m"
reset_color="\x1b[0m"
sed -r "s/'[^']*'/${CYAN}&${reset_color}/g;
s/[a-z_]*_id/${white}&${reset_color}/g;
s/(.*\[)(AbstractApplicationContext)(\].*)/${BLACK}\\1${reset_color}${yellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(ActionService)(\].*)/${BLACK}\\1${reset_color}${lyellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(Authenticated)(\].*)/${BLACK}\\1${reset_color}${lyellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(CascadeHandlerImpl)(\].*)/${BLACK}\\1${reset_color}${lred}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(ClasspathHacker)(\].*)/${BLACK}\\1${reset_color}${lred}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(ConfigManagerImpl|ConfigManagerLoader)(\].*)/${BLACK}\\1${reset_color}${lred}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(ContextFilter|ContextImpl|ContextLoader)(\].*)/${BLACK}\\1${reset_color}${lred}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(DataSourceRestrictionConverter)(\].*)/${BLACK}\\1${reset_color}${lgreen}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(DatabaseLoader)(\].*)/${BLACK}\\1${reset_color}${lgreen}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(DefaultListableBeanFactory)(\].*)/${BLACK}\\1${reset_color}${lgreen}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(DispatchFilter)(\].*)/${BLACK}\\1${reset_color}${lgreen}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(FileHelper|FileIndex)(\].*)/${BLACK}\\1${reset_color}${lyellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(LicenseManagerImpl)(\].*)/${BLACK}\\1${reset_color}${lblue}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(LocalizedStringsLoader)(\].*)/${BLACK}\\1${reset_color}${lblue}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(LoggingPropertyPlaceholderConfigurer)(\].*)/${BLACK}\\1${reset_color}${lblue}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(PooledDbDriverImpl)(\].*)/${BLACK}\\1${reset_color}${lcyan}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(ProjectLoader)(\].*)/${BLACK}\\1${reset_color}${lcyan}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(PropertiesLoaderSupport)(\].*)/${BLACK}\\1${reset_color}${lcyan}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(RenderingFilter)(\].*)/${BLACK}\\1${reset_color}${lwhite}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(SecurityControllerImpl|SecurityServiceImpl)(\].*)/${BLACK}\\1${reset_color}${lblue}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(WorkflowRulesContainerImpl|WorkflowRulesContainerLoader)(\].*)/${BLACK}\\1${reset_color}${lred}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(XmlBeanDefinitionReader)(\].*)/${BLACK}\\1${reset_color}${lgreen}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(SELECT|select)(.*)((FROM|from) ([^ )]*))([^\]]*)(WHERE|where)?/${yellow}\\1${reset_color}\\2${yellow}\\4${reset_color} ${YELLOW}\\5${reset_color}\\6${yellow}\\7${reset_color}/g;
s/LEFT OUTER JOIN [^ ]* ON/${yellow}&${reset_color}/g;
s/ORDER BY/${yellow}&${reset_color}/g;
s/(ASC|DESC)/${yellow}&${reset_color}/g;
s/GROUP BY/${yellow}&${reset_color}/g;
s/(INSERT INTO) ([^ ]*)(.*)(VALUES)/${green}\\1${reset_color} ${GREEN}\\2${reset_color}\\3${green}\\4${reset_color}/g;
s/(INSERT INTO) ([^ ]*)(.*)/${green}\\1${reset_color} ${GREEN}\\2${reset_color}\\3${reset_color}/g;
s/(UPDATE) *([^ ]*) (SET|set)/${blue}\\1${reset_color} ${BLUE}\\2${reset_color} ${blue}\\3${reset_color}/g;
s/DELETE FROM *[^ ]* WHERE/${RED}&${reset_color}/g;
s/\*\*\*ROLLBACK\*\*\*/${white}${onred}&${reset_color}/g;
s/\[ERROR\]/${WHITE}${onred}&${reset_color}/g;
s/SQLServerException:/${WHITE}${onred}&${reset_color}/g"
但是，当在1.9 MB的日志文件上运行时，需要1:41（1分41秒）才能执行...而一只简单的猫在0:01以内运行...
如果我删除＆＃34; AbstractApplicationContext＆＃34;之间的块，则相同的结果（1秒内）和＆＃34; XmlBeanDefinitionReader＆＃34;。
我不明白为什么那个特定的区块会产生这样的差异！？
有没有办法优化这种着色脚本？
示例文件提取（复制以使其成为大文件）：
[INFO ][2016-05-20 16:17:51,346][ContextLoader] - [Root WebApplicationContext: initialization started]
[INFO ][2016-05-20 16:17:51,505][XmlBeanDefinitionReader] - [Loading XML bean definitions from ServletContext resource [/WEB-INF/config/context/appContext.xml]]
[INFO ][2016-05-20 16:17:52,986][PropertiesLoaderSupport] - [Loading properties file from class path resource [config/mail.properties]]
[INFO ][2016-05-20 16:17:55,900][ConfigManagerLoader] - [Reading XML config]
[INFO ][2016-05-20 16:17:55,991][ConfigManagerLoader] - [Reading XML config: OK]
[WARN ][2016-05-20 16:17:56,384][ConfigManagerLoader] - [Low max memory=477102080. Java max memory=1000 MB is recommended for production use, as a minimum.]
[INFO ][2016-05-20 16:17:58,309][LocalizedStringsLoader] - [Loading localized strings for locale=[fr_FR]]
[INFO ][2016-05-20 16:17:58,337][LocalizedStringsLoader] - [Loading localized strings for locale=[fr_FR]: OK, strings:759]
[INFO ][2016-05-20 16:17:58,641][LocalizedStringsLoader] - [Loading localized strings for locale=[fr_FR]]
[INFO ][2016-05-20 16:17:58,768][LocalizedStringsLoader] - [Loading localized strings for locale=[fr_FR]: OK, strings:46436]
[INFO ][2016-05-20 16:17:58,830][LocalizedStringsLoader] - [Loading localized strings for locale=[nl_NL]]
[INFO ][2016-05-20 16:17:58,946][LocalizedStringsLoader] - [Loading localized strings for locale=[nl_NL]: OK, strings:46436]
[INFO ][2016-05-20 16:17:59,434][PropertiesLoaderSupport] - [Loading properties file from class path resource [config/mail.properties]]
[INFO ][2016-05-20 16:18:00,476][XmlBeanDefinitionReader] - [Loading XML bean definitions from class path resource [project-child-context.xml]]
[DEBUG][2016-05-20 16:18:01,259][DbConnectionImpl] - [SET CONCAT_NULL_YIELDS_NULL OFF]
[DEBUG][2016-05-20 16:18:01,340][DbConnectionImpl] - [Updated: -1 records]
[INFO ][2016-05-20 16:18:01,363][DatabaseImpl] - [Database loaded: data]
[INFO ][2016-05-20 16:18:01,379][DatabaseLoader] - [Loading Database [data]: OK]
[INFO ][2016-05-20 16:18:01,393][DatabaseLoader] - [Loading Database [schema]]
[DEBUG][2016-05-20 16:18:01,865][DbConnectionImpl] - [SELECT column FROM table WHERE table_name = 'sample']
[DEBUG][2016-05-20 16:18:01,894][DbConnectionImpl] - [SET CONCAT_NULL_YIELDS_NULL OFF]
[DEBUG][2016-05-20 16:18:01,898][DbConnectionImpl] - [Updated: -1 records]
[INFO ][2016-05-20 16:18:06,241][WorkflowRulesContainerLoader] - [Loading Workflow Rule, ruleId=[checkRequestDuplicates]]
[INFO ][2016-05-20 16:18:06,384][WorkflowRulesContainerLoader] - [Loading Workflow Rule, ruleId=[getStatistic]]
[INFO ][2016-05-20 16:18:06,971][WorkflowRulesContainerLoader] - [Loading Workflow Rule, ruleId=[saveRecord]]
[INFO ][2016-05-20 16:18:07,126][WorkflowRulesContainerLoader] - [Loading Workflow Rule, ruleId=[EmailService]]
[INFO ][2016-05-20 16:18:07,542][WorkflowRulesContainerLoader] - [Loading Workflow Rule, ruleId=[LocalizationRead]]
[INFO ][2016-05-20 16:18:09,578][FileIndex$1] - [File index loading started]
[DEBUG][2016-05-20 16:18:19,406][DbConnectionImpl] - [SET CONCAT_NULL_YIELDS_NULL OFF]
[DEBUG][2016-05-20 16:18:19,410][DbConnectionImpl] - [Updated: -1 records]
[INFO ][2016-05-20 16:18:22,201][LicenseManagerImpl] - [Checkout concurrent license=[Main]]
[DEBUG][2016-05-20 16:18:22,209][SecurityControllerImpl] - [Determine next request]
[DEBUG][2016-05-20 16:18:22,239][RenderingFilter] - [Rendering mode]
[DEBUG][2016-05-20 16:18:22,253][Authenticated] - [User is authenticated]
[DEBUG][2016-05-20 16:18:22,306][FileHelper] - [Find file=[hovertip.js]]
[DEBUG][2016-05-20 16:18:22,399][FileHelper] - [Find file=[hovertip.css]]
[DEBUG][2016-05-20 16:22:18,263][DbConnectionImpl] - [INSERT INTO notifications_log (columns, columns) VALUES ('2016-05-20', 'ERROR')]
[DEBUG][2016-05-20 16:22:18,334][DbConnectionImpl] - [Updated: 1 records]
[DEBUG][2016-05-20 16:22:18,393][DbConnectionImpl] - [***COMMIT***]
[DEBUG][2016-05-20 16:22:18,549][DbConnectionImpl] - [***ROLLBACK***]
[DEBUG][2016-05-20 16:23:37,659][DbConnectionImpl] - [SET CONCAT_NULL_YIELDS_NULL OFF]
[DEBUG][2016-05-20 16:23:37,662][DbConnectionImpl] - [Updated: -1 records]
[DEBUG][2016-05-20 16:23:37,886][DataSourceImpl] - [SELECT col_id FROM table_1 LEFT OUTER JOIN table_2 ON table_1.col_id=table_2.col_id]
[DEBUG][2016-05-20 16:23:37,926][DbConnectionImpl] - [***COMMIT***]
[DEBUG][2016-05-20 16:23:37,930][ContextFilter] - [---------- Request: processing finished]
[DEBUG][2016-05-20 16:38:38,033][DbConnectionImpl] - [UPDATE users SET pwd = NULL WHERE user_name = 'me']
[DEBUG][2016-05-20 16:38:38,051][DbConnectionImpl] - [Updated: 1 records]
[DEBUG][2016-05-20 16:38:38,058][DbConnectionImpl] - [SET CONCAT_NULL_YIELDS_NULL OFF]
[DEBUG][2016-05-20 16:38:38,063][DbConnectionImpl] - [Updated: -1 records]
[DEBUG][2016-05-20 17:43:25,087][DbConnectionImpl] - [***COMMIT***]
[DEBUG][2016-05-20 17:43:25,096][ContextFilter] - [---------- Request: processing finished]
答案 0 :(得分：1)
减少类似的行
s/(.*\[)(ActionService)(\].*)/${BLACK}\\1${reset_color}${lyellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
s/(.*\[)(Authenticated)(\].*)/${BLACK}\\1${reset_color}${lyellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
and so forth
一行
s/(.*\[)(ActionService|Authenticated)(\].*)/${BLACK}\\1${reset_color}${yellow}\\2${reset_color}${BLACK}\\3${reset_color}/g;
获得更多表现。
答案 1 :(得分：1)
这需要很长时间，因为您需要将每个输入行与37个正则表达式中的每一个进行比较！使用awk并进行一次测试，例如：
$ cat file
[INFO ][ts 1][ContextLoader] - [rest 1]
[INFO ][ts 2][XmlBeanDefinitionReader] - [rest 2]
[INFO ][ts 3][PropertiesLoaderSupport] - [rest 3]
$
$ cat tst.awk
BEGIN {
red = "<red>" # "\x1b[31m"
green = "<green>" # "\x1b[32m"
yellow = "<yellow>" # "\x1b[33m"
black = "<black>" # "\x1b[30;1m"
reset = "<reset>" # "\x1b[0m"
color["ContextLoader"] = red
color["XmlBeanDefinitionReader"] = green
color["PropertiesLoaderSupport"] = yellow
}
match($0,/((\[[^]]+\]){2}\[)([^]]+)(.*)/,a) {
print black a[1] reset color[a[3]] a[3] reset black a[4] reset
}
$ awk -f tst.awk file
<black>[INFO ][ts 1][<reset><red>ContextLoader<reset><black>] - [rest 1]<reset>
<black>[INFO ][ts 2][<reset><green>XmlBeanDefinitionReader<reset><black>] - [rest 2]<reset>
<black>[INFO ][ts 3][<reset><yellow>PropertiesLoaderSupport<reset><black>] - [rest 3]<reset>
以上隔离了您关注的每一行的部分中出现的任何字符串，然后在哈希中查找该字符串的颜色以进行打印。它使用GNU awk为第3个arg匹配（），它是对其他awks的简单调整。
我使用了<red>之类的颜色名称，因此您可以看到输出。在您的真实系统中，您只需撰写red = "\x1b[31m"而不是red = "<red>" # "\x1b[31m"等。
要更新上述内容以处理SQL语句，请模拟sed脚本中的逻辑：
s/(SELECT|select)(.*)((FROM|from) ([^ )]*))([^\]]*)(WHERE|where)?/${yellow}\\1${reset_color}\\2${yellow}\\4${reset_color} ${YELLOW}\\5${reset_color}\\6${yellow}\\7${reset_color}/g;
s/LEFT OUTER JOIN [^ ]* ON/${yellow}&${reset_color}/g;
就像（在这个答案中现有的awk脚本中的第一个块）：
....
match($0,/((\[[^]]+\]){2}\[)([^]]+)(.*)/,a) {
print black a[1] reset color[a[3]] a[3] reset black a[4] reset
next
}
match($0,/(SELECT|select)(.*)((FROM|from) ([^ )]*))([^\]]*)(WHERE|where)?/,a) {
print yellow a[1] reset a[2] yellow a[4] reset yellow a[5] reset a[6] yellow reset
next
}
match($0,/LEFT OUTER JOIN [^ ]* ON/,a) {
print yellow a[0] reset
next
}
....
注意＆＃34; next＆＃34;每个块末尾的语句 - 告诉awk停止处理当前输入行并返回到它的隐式while read line工作循环的开始。我们使用它来提高效率，以便在它已经成功地将正则表达式与线匹配后，再次阻止awk再次分析该行。