AppsDBA: Some useful Linux/Unix Commands

Some useful Linux/Unix Commands

 Check the forms version:

strings -a $AU_TOP/forms/US/sachin_test.fmb | grep '$Header'

strings -a $SACHIN_TOP/forms/US/sachin_test.fmx | grep '$Header'

 Install our own script

install -c /usr/local/bin

 List the information for partitions

[root@erp ~]# parted -l

 Monitor backup in RHEL 5

[root@erp ~]# watch df -m

 Check the size of a directory

[root@erp ~ ]# du -sch .

 Monitor rapid clone

[root@erp ~]# tail -f file_name_with_location

 Check the last updated file name on current location

[root@erp ~]# ls -lrt | tail -1

-rwxr-xr-x 1 root dba 41 Feb 22 01:33 new2.sh

 Get the CPU info

[root@erp ~]# vi /proc/cpuinfo

[root@erp ~]# vi /proc/slabinfo

 Remove the last updated file

[root@erp ~]# ls -lrt | tail -1| awk ‘{print $9}’|xargs rm -f

 Check the server up time

[root@erp ~]# uptime

 Get the Information about memory

[root@erp ~]# vmstat

[root@erp ~]# vmstat -m

Alternatively ,we can check with the following command.

[root@erp ~]# iostat -t 10 5

 Search and remove files

$find . -name file_name | xargs -i rm -rf {}

 Top 10 file regarding there size:

find . -type f | xargs ls -s | sort -rn | awk ‘{size=$1/1024; printf(“%dMb %s\n”,

size,$2);}’ | head

du -xak . | sort -n | awk ‘{size=$1/1024; path=”"; for (i=2; i 50) { printf(“%dMb

%s\n”, size,path); } }’

du -a /var | sort -n -r | head -n 10

 Delete the files by Month

ls -lh | awk ‘{print $6 ” ” $9}’ | sed -n ‘/Mar/p’ | xargs rm -rf

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AppsDBA