Random One Liners

 /usr/sbin/rear -v mkbackup nfs://nas_name/linux_bkp/images  in  /etc/rear/local.conf



blockdev --rereadpt /dev/sdb

pvresize /dev/sdb



free && sync && echo 3 > /proc/sys/vm/drop_caches && free

echo 1 > /proc/sys/vm/drop_caches

 echo 2 > /proc/sys/vm/drop_caches

echo 3 > /proc/sys/vm/drop_caches



date --set="$(ssh user@server date)"


echo "body" | mailx -s "subject" test@hello.com





for i in /var/spool/postfix/*;do echo $i; find $i |wc -l; done


find /var/Secured_History -size  0 -print0 |xargs -0 rm

zoneadm list -cv


find / \( -fstype ext2 -o -fstype ext3 -o -fstype ext4 -o -fstype btrfs \) -exec setfattr -x security.selinux {} \;


arp -a|grep SP


timeout 1 bash -c 'cat < /dev/null > /dev/tcp/test_server/37410'



append fastboot to kernel line to skip fsck


ss -ln src :22

alternatives --display java



find / -size +1000 -xdev -exec du -sh {} \;|sort -nk1


from jump to remote server = ssh test_server date -s @`( date -u +"%s" )`


lvs -o +devices /dev/vg01/oracle


echo 1 > /sys/block/device-name/device/delete



yum --disablerepo="*" --enablerepo="ius" install rsyslog4 


rpm -iv --replacepkgs <packagefile>


hwclock --systohc


vim-cmd /vmsvc/getallvms

vim-cmd vmsvc/power.getstate <id>

vim-cmd vmsvc/power.on <id>

vim-cmd vmsvc/power.off <id>

vim-cmd vmsvc/reload 524



get VC from esx

grep serverIp /etc/vmware/vpxa/vpxa.cfg 


esxcfg-vmknic -l


bios.hddOrder = "scsi0:0"


fallocate -l Image_Size_Here /path/to/image.img


services.sh restart &tail -f /var/log/jumpstart-stdout.log

/usr/lib/rpm/rpmdb_verify /var/lib/rpm/Packages 

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