Category: Linux/Unix

*******************************************************************************************Step by Step Implementation of key based authentications from Source A to Destination B. ******************************************************************************************* (1) At source A (1-A) Generate a Key ssh-keygen -t dsa Sampe Output posdbprod21->CIF@(/export/home/oracle/paresh)ssh-keygen -t dsa Generating public/private dsa key pair. Enter file in which to save the key (/export/home/oracle/.ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again:…

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$ /usr/platform/sun4u/sbin/prtdiag System Configuration: Sun Microsystems sun4u 8-slot Sun Enterprise E4500/E5500 System clock frequency: 100 MHz Memory size: 10240Mb ========================= CPUs ========================= Run Ecache CPU CPU Brd CPU Module MHz MB Impl. Mask — — ——- —– —— —— —- 0 0 0 400 8.0 US-II 1.0 0 1 1 400 8.0 US-II 1.0 2…

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This is the script used for merging multiple text files in single large text(ASCII) file. for i in `ls *sql *sh` { echo “****************************************************” >> myfile echo File Name : $i >> myfile echo “****************************************************” >> myfile cat $i >> myfile echo ” ” >> myfile }

copying/removing directory with all its subdirectory use -r flag for recursive copy (cp) or remove (rm). use -f flag for forcefully. I used “rm -fr dir_name” and “cp -r src_dir dest_dir”.

#!/bin/ksh for fname in `ls` do print “”; print “/* File Name : $fname */”; print “”; cat $fname done

uocdbprod21->WEBARCH@(/db2/oradata)ls -rlt /db?/oradata/WEBP18F /db6/oradata/WEBP18F: total 0 /db5/oradata/WEBP18F: total 0 /db3/oradata/WEBP18F: total 0 /db4/oradata/WEBP18F: total 0 /db2/oradata/WEBP18F: total 0 uocdbprod21->WEBARCH@(/db2/oradata)

!/bin/ksh . /export/home/oracle/envs/oracle_env_PNETP save_date=`date +%Y%m%d%H%M` # Set ORATAB variable if [ -f /etc/oratab ] ; then ORATAB=/etc/oratab else if [ -f /var/opt/oracle/oratab ] ; then ORATAB=/var/opt/oracle/oratab else echo “” echo “`date` Cannot find oratab!” echo “” exit 2 fi fi export ORATAB # search the alert log for errors for all databases # for ORACLE_SID…

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df -k | grep -i “/EMCdb”|awk ‘{tot += $2; used += $3; avail += $4;} END {print “Total”,tot/1024/1024,”Used “,used/1024/1024,”Avail “avail/102 4/1024, “Avail % ” avail*100/tot, “Used % ” used*100/tot}’ df -k | grep -i “/testdb”|awk ‘{tot += $2; used += $3; avail += $4;} END {print “Total”,tot/1024/1024,”Used “,used/1024/1024,”Avail “avail/10 24/1024, “Avail % ” avail*100/tot, “Used…

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find . -type d -exec du -sk {} ;

Method 1 ======== One more way of adding two numbers. Which one to use depends on which shell it is. d=400 e=52 f=`expr $d + $e` print $f Method 2 ======== #!/usr/bin/ksh let a=$1 let b=$2 let c=a+b print $c