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How to find the symbolic links that point to the old path in your
oracle_home and appl_top.
This command is useful in cloning after restore from source to target that symbolic link
are not pointing to source.
ls -al `find . -type l` | grep $OLD_PATH
To find all the text files that contains the old path at the UNIX
level.
find . -type f -print|grep -v ":"|xargs file|grep "text"|awk
'{FS=":"}{print $1}'|xargs grep -il $OLD_PATH
How to Sort files based on Size of file in a Directory
Useful in finding out spaces issues
ls -l | sort -nrk 5 | more
How to check if a Port is listening for any Service
netstat -an | grep $PORTNO
How to schedule a Job in Unix
Use cronjob
crontab -l ( list current jobs in cron)
crontab -e ( edit current jobs in cron )
_1_ _2_ _3_ _4_ _5_ $Job_Name
1 - Minutes (0-59)
2 - Hours ( 0-24)
3 - day of month ( 1- 31 )
4 - Month ( 1-12)
5 - A day of week ( 0- 6 ) 0 -> sunday 1-> monday
e.g. 0 0 1 * 5 Means run job at Midnight on 1st of month & every friday
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