# Logread -f and logread -f | grep not giving any output **URL:** \ **Category:** Uncategorized\ **Created:** [December 18, 2025, 9:43am UTC](https://forum.legato.io/t/logread-f-and-logread-f-grep-not-giving-any-output/6977 "2025-12-18T09:43:05Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![fsdabharati](https://avatars.discourse-cdn.com/v4/letter/f/e0b2c6/32.png) [@fsdabharati](https://forum.legato.io/u/fsdabharati)\ **Post date:** [December 18, 2025, 9:43am UTC](https://forum.legato.io/t/logread-f-and-logread-f-grep-not-giving-any-output/6977/1 "2025-12-18T09:43:05Z")
root@swi-mdm9x28-wp:~# logread | tail -20 Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/lib/libgcc\_s.so.1’ to ‘/legato/systems/current/appsWriteable/App1/lib/libgcc\_s.so.1’: Already exists Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/lib/libm.so.6’ to ‘/legato/systems/current/appsWriteable/App1/lib/libm.so.6’: Already exists Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/usr/lib/libstdc++.so.6’ to ‘/legato/systems/current/appsWriteable/App1/lib/libstdc++.so.6’: Already exists Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/legato/systems/current/apps/App1/read-only/lib/libComponent\_Component1.so’ to '/legato/systems/current/appsWriteable/App1/lib/libCo Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/legato/systems/current/apps/App1/read-only/bin/firstapp’ to ‘/legato/systems/current/appsWriteable/App1/bin/firstapp’: Already exis Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateTmpFs() 1787 | Mounted tmpfs at /legato/systems/current/appsWriteable/App1/tmp. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2153 | Created file link ‘/tmp/legato/serviceDirectoryServer’ to ‘/legato/systems/current/appsWriteable/App1/tmp/legato/serviceDirectoryServer’. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2153 | Created file link ‘/tmp/legato/serviceDirectoryClient’ to ‘/legato/systems/current/appsWriteable/App1/tmp/legato/serviceDirectoryClient’. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | resourceLimits.c GetCfgResourceLimit() 207 | Configured resource limit maxStackBytes is not available. Using the default value 0. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | proc.c proc\_Start() 1403 | Starting process ‘firstapp’ with pid 8775 Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | supervisor.c SigChildHandler() 899 | Reaping unconfigured child process 8771. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | proc.c proc\_Start() 1363 | Execing ‘firstapp’ Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxCoreDumpFileBytes to value 102400. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxFileBytes to value 102400. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxLockedMemoryBytes to value 8192. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxFileDescriptors to value 256. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxMQueueBytes to value 512. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxThreads to value 20. Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxQueuedSignals to value 100. Dec 18 09:23:49 swi-mdm9x28-wp user.info Legato: INFO | firstapp[8775]/Component1 T=main | App1.c \_Component1\_COMPONENT\_INIT() 8 | App1 working root@swi-mdm9x28-wp:~# logread -f | grep App1 ^C root@swi-mdm9x28-wp:~# logread -f ^C I am not getting logread output when i run logread for my specific Application App1. I can only see the output of my app when i run below command logread -f | tail -10 Can anyone help me. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [December 18, 2025, 10:24am UTC](https://forum.legato.io/t/logread-f-and-logread-f-grep-not-giving-any-output/6977/2 "2025-12-18T10:24:27Z")
You can try to remove the -f option