This documentation covers Linux commands that are useful as they pertain to Oracle Applications.
1. To change prompt to display the time:
PS1='[u@h W] t $ ‘
alias settime=’PS1=”'[u@h W] t $ ””
alias settime=”PS1='[u@h W] t $ ‘”
Modify the /etc/bashrc file as root to add alias for all terminal windows.
2. To list the free disk space on all drives:
df -h
3. To display the disk space used by a directory:
du oracle -csh
4. To display lines in files with the word ‘oracle’:
for i in `ls -a`; do grep -Hnr oracle $i; done;
-H, –with-filename
Print the filename for each match.
-n, –line-number
Prefix each line of output with the line number within its
inputfile.
-R, -r, –recursive
Read all files under each directory, recursively; this is
equivalent to the -d recurse option.
5. To create a symbolic link to another directory:
ln -s stage11i10/ stage11510
For example: [root@appslinux u1]# ln -s stage11i10/ stage11510
ln [OPTION]… TARGET… DIRECTORY
Note that this command may need to be executed as the root user.
6. To delete directories one at a time while noting the time started:
for i in `ls`; do echo –n ‘Deleting ‘ $i ‘: Started ‘ ; date ; rm -r $i /u4/oracle/; done
7. To copy directories one at a time while noting the time started:
for i in `ls`; do echo –n ‘Copying ‘ $i ‘: Started ‘ ; date ; cp -r $i /u4/oracle/; done
8. How to Set the Date:
date -s “09/03/2006 14:09:00”
This sets the date to 03-SEP-2006, time 13:17. Note: this command is executed as root. Note: format is “mm/dd/yyyy”
9. To test all zip files in a directory:
for i in `ls *.zip`; do unzip -qt $i; done;
10. To get the size of directories one at a time:
for i in `ls`; do echo -n ‘Size of ‘ $i ‘: ‘ ; du $i -sh ; done ; du -sh
11. To get the total size of a directory:
du -sh
12. To search all files with AP_ACCOUNTING_MAIN_PKG:
for i in `find . -type f`; do grep -Hin AP_ACCOUNTING_MAIN_PKG $i; done;
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