As advised I edited the line but still I see the below error message I also viewed editor the line is added
please advise


[Oracle@linux ~]$ /PROD/inst/apps/PROD_linux/logs/appl/admin/log/adopmnctl.txt
bash: /PROD/inst/apps/PROD_linux/logs/appl/admin/log/adopmnctl.txt: No such file or directory
[Oracle@linux ~]$ ls
Desktop Downloads media oradiag_Oracle PROD Stage Videos
Documents editor Music Pictures Public Templates
[Oracle@linux ~]$ cd PROD
[Oracle@linux PROD]$ ls
apps db inst
[Oracle@linux PROD]$ cd apps
[Oracle@linux apps]$ ls
apps_st tech_st
[Oracle@linux apps]$ cd PROD
bash: cd: PROD: No such file or directory
[Oracle@linux apps]$ cd
[Oracle@linux ~]$ cd PROD
[Oracle@linux PROD]$ ls
apps db inst
[Oracle@linux PROD]$ cd inst
[Oracle@linux inst]$ ls
apps
[Oracle@linux inst]$ cd apps
[Oracle@linux apps]$ ls
PROD_linux
[Oracle@linux apps]$ cd PROD_linux
[Oracle@linux PROD_linux]$ ls
admin appltmp conf_PROD.txt logs out portal soa
appl certs conf_PROD.txt.bac ora pids rgf temp
[Oracle@linux PROD_linux]$ cd logs
[Oracle@linux logs]$ ls
05112218.log appl ora
[Oracle@linux logs]$ cd appl
[Oracle@linux appl]$ ls
admin conc oam rgf
[Oracle@linux appl]$ cd admin\
>
[Oracle@linux admin]$ ls\
>
log
[Oracle@linux admin]$ ls
log
[Oracle@linux admin]$ cd log
[Oracle@linux log]$ ls
adalnctl.txt adcmctl.txt adoacorectl.txt adopmnctl.txt javacache.log
adapcctl.txt adformsctl.txt adoafmctl.txt adstrtal.log jtffmctl.txt
[Oracle@linux log]$ cd adopmnctl.txt
bash: cd: adopmnctl.txt: Not a directory
[Oracle@linux log]$ cd adopmnctl.txt
bash: cd: adopmnctl.txt: Not a directory
[Oracle@linux log]$ ls
adalnctl.txt adcmctl.txt adoacorectl.txt adopmnctl.txt javacache.log
adapcctl.txt adformsctl.txt adoafmctl.txt adstrtal.log jtffmctl.txt
[Oracle@linux log]$ cat adopmnctl.txt

05/12/13-01:08:53 :: adopmnctl.sh version 120.6


05/12/13-01:08:53 :: adopmnctl.sh: Starting Oracle Process Manager (OPMN)

opmnctl: opmn start failed.

05/12/13-01:09:00 :: adopmnctl.sh: exiting with status 2


================================================================================


07/06/13-23:05:25 :: adopmnctl.sh version 120.6


07/06/13-23:05:25 :: adopmnctl.sh: Starting Oracle Process Manager (OPMN)

opmnctl: opmn start failed.

07/06/13-23:05:33 :: adopmnctl.sh: exiting with status 2


================================================================================

[Oracle@linux log]$ su root
Password:
[root@linux log]# cat /etc/hosts
127.0.0.1 linux.server linux
localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6x
127.0.0.1 linux.server linux
[root@linux log]#