09-20-2013
How to grep logs for errors and receive specific additional lines?
Hi there,
I have a script that I've used to find errors in my Minecraft Server logs. But I'd like to refine that script to be more useful.
Here is the script:
Code :
grep -n "SEVERE" /minecraft/server.log | awk -F":" '{print $1-2 "," $1+10 "p"}' | xargs -t -i sed -n {} /minecraft/server.log >> /minecraft/severe_errors.log
Here is what the script is looking through:
Code :
2013-09-20 09:55:28 [INFO] [PermissionsEx] Enabling PermissionsEx v1.19.5
2013-09-20 09:55:28 [INFO] [PermissionsEx] Superperms support enabled.
2013-09-20 09:55:28 [INFO] [PermissionsEx] v1.19.5 enabled
2013-09-20 09:55:28 [INFO] WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
2013-09-20 09:55:28 [INFO] [Vault][Chat] PermissionsEx_Chat hooked.
2013-09-20 09:55:28 [INFO] [Wither] Enabling Wither v2.0
2013-09-20 09:55:28 [INFO] [Wither] Wither v2.0 enabled!
2013-09-20 09:55:28 [INFO] [MobCatcher] Enabling MobCatcher v3.7
2013-09-20 09:55:28 [INFO] [MobCatcher] Author: Malikk
2013-09-20 09:55:28 [INFO] [0;31;1mYou are not running the correct version of Craftbukkit for this version of MobCatcher.[m
2013-09-20 09:55:28 [INFO] [0;31;1mMobCatcher v3.7 is intended to be run on CB 1.5.1-R0.1-SNAPSHOT[m
2013-09-20 09:55:28 [INFO] [0;31;1mExpect major bugs or failure to enable. Please do not report bugs until you are using compatible versions of CB and MobCatcher.[m
2013-09-20 09:55:28 [INFO] [MobCatcher] Hooked Vault 1.2.24-b304
2013-09-20 09:55:28 [INFO] [MobCatcher] Spout was not found.
2013-09-20 09:55:28 [INFO] [MobCatcher] remove stackability: true
2013-09-20 09:55:28 [SEVERE] Error occurred while enabling MobCatcher v3.7 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_5_R2/Item
at me.jordan.mobcatcher.MobCatcher.removeStackability(MobCatcher.java:1170)
at me.jordan.mobcatcher.MobCatcher.onEnable(MobCatcher.java:120)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
at net.minecraft.server.v1_5_R3.MinecraftServer.j(MinecraftServer.java:304)
at net.minecraft.server.v1_5_R3.MinecraftServer.e(MinecraftServer.java:283)
at net.minecraft.server.v1_5_R3.MinecraftServer.a(MinecraftServer.java:243)
at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:151)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_5_R2.Item
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
2013-09-20 09:55:28 [INFO] [Multiverse-Inventories] Enabling Multiverse-Inventories v2.5-b346
2013-09-20 09:55:28 [INFO] [Multiverse-Inventories 2.5-b346] enabled.
2013-09-20 09:55:28 [INFO] [WormholeXTreme] Enabling WormholeXTreme v1.031
2013-09-20 09:55:28 [INFO] [WormholeXTreme][v1.031] Boot sequence initiated...
2013-09-20 09:55:28 [INFO] [WormholeXTreme][v1.031] Wormhole Worlds support disabled in settings.txt, loading stargates and worlds by our self.
2013-09-20 09:55:29 [INFO] [WormholeXTreme] 49 Wormholes loaded from WormholeDB.
2013-09-20 09:55:29 [INFO] [WormholeXTreme] PermissionAlias backend: 'pex' registered!
2013-09-20 09:55:29 [INFO] [WormholeXTreme] PermissionAlias backend: 'bukkit' registered!
2013-09-20 09:55:29 [INFO] [WormholeXTreme] Attempting to use supported permissions plugin 'PermissionsEx'
2013-09-20 09:55:29 [WARNING] [WormholeXTreme] This plugin is not ready yet.
2013-09-20 09:55:29 [INFO] [WormholeXTreme] Initializing bukkit backend
2013-09-20 09:55:29 [INFO] [WormholeXTreme] Config node PERMISSIONS_BACKEND changed to 'pex'
2013-09-20 09:55:29 [INFO] [WormholeXTreme] Initializing pex backend
2013-09-20 09:55:29 [WARNING] [WormholeXTreme] This plugin is not ready yet.
2013-09-20 09:55:29 [INFO] [WormholeXTreme] Attached to PermissionsEx version 1.19.5
2013-09-20 09:55:29 [INFO] [WormholeXTreme][v1.031] Boot sequence completed
2013-09-20 09:55:29 [INFO] [Multiverse-NetherPortals] Enabling Multiverse-NetherPortals v2.5-b660
2013-09-20 09:55:29 [INFO] [Multiverse-NetherPortals] - Version 2.5-b660 Enabled - By Rigby and fernferret
2013-09-20 09:55:29 [INFO] Server permissions file permissions.yml is empty, ignoring it
2013-09-20 09:55:29 [INFO] Done (4.261s)! For help, type "help" or "?"
Here is what the script grabs:
Code :
2013-09-20 09:55:28 [SEVERE] Error occurred while enabling MobCatcher v3.7 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_5_R2/Item
at me.jordan.mobcatcher.MobCatcher.removeStackability(MobCatcher.java:1170)
at me.jordan.mobcatcher.MobCatcher.onEnable(MobCatcher.java:120)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
at net.minecraft.server.v1_5_R3.MinecraftServer.j(MinecraftServer.java:304)
at net.minecraft.server.v1_5_R3.MinecraftServer.e(MinecraftServer.java:283)
Here is what I wish the script grabbed instead:
Code :
2013-09-20 09:55:28 [INFO] [MobCatcher] Enabling MobCatcher v3.7
2013-09-20 09:55:28 [INFO] [MobCatcher] Author: Malikk
2013-09-20 09:55:28 [INFO] [0;31;1mYou are not running the correct version of Craftbukkit for this version of MobCatcher.[m
2013-09-20 09:55:28 [INFO] [0;31;1mMobCatcher v3.7 is intended to be run on CB 1.5.1-R0.1-SNAPSHOT[m
2013-09-20 09:55:28 [INFO] [0;31;1mExpect major bugs or failure to enable. Please do not report bugs until you are using compatible versions of CB and MobCatcher.[m
2013-09-20 09:55:28 [INFO] [MobCatcher] Hooked Vault 1.2.24-b304
2013-09-20 09:55:28 [INFO] [MobCatcher] Spout was not found.
2013-09-20 09:55:28 [INFO] [MobCatcher] remove stackability: true
2013-09-20 09:55:28 [SEVERE] Error occurred while enabling MobCatcher v3.7 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_5_R2/Item
at me.jordan.mobcatcher.MobCatcher.removeStackability(MobCatcher.java:1170)
at me.jordan.mobcatcher.MobCatcher.onEnable(MobCatcher.java:120)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
at net.minecraft.server.v1_5_R3.MinecraftServer.j(MinecraftServer.java:304)
at net.minecraft.server.v1_5_R3.MinecraftServer.e(MinecraftServer.java:283)
at net.minecraft.server.v1_5_R3.MinecraftServer.a(MinecraftServer.java:243)
at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:151)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_5_R2.Item
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
In essence, what I wish it did was grab ALL lines after a "[SEVERE]" tag until it gets to another line that starts with "2013" or a "yyyy-mm-dd" pattern. In addition, I'd like it to grab the 10 lines the precede the [SEVERE] entry to help give me context.
Thanks for any help you can provide!
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