x2c3z4

cat servers.csv | cut -d, -f3 | grep -v "@" | grep "^\"" | grep "oracle.com" | sed 's/"//g' | while read domain;do elasp=`ping -c 1 $domain 2>/dev/null | grep -o " time=.* ms" | egrep -o "[0-9]{1,4}"`;[[ -n $elasp ]] && echo "$domain $elasp";done | tee xxx.log

cat xxx.log | sort -k2 

x2c3z4

#!/bin/bash
[[ $# -lt 1 ]] && echo "Pleasee give the conf name, not need the suffix(.conf)!" && exit
[[ -n $1 ]] && path=$1 && conf=.$1.conf
if [ -e $conf ];then
  old_no=`cat $conf`
  curr_no=$(( $old_no + 1 ))
else
  old_no=0
  curr_no=1
fi

x2c3z4

 modprobe scsi_debug max_luns=2 num_tgts=7 add_host=3 
 
 lsscsi -s
 
 sdparm -i /dev/sdc
 
 /sys/bus/pseudo/drivers/scsi_debug/

x2c3z4

# tcpdump filter for HTTP GET 
tcpdump -s 0 -A 'tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x47455420' -i wlan0
# tcpdump filter for HTTP POST 
tcpdump -s 0 -A 'tcp dst port 80 and (tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x504f5354)' -i wlan0

x2c3z4

#!/usr/sbin/dtrace -q -o graph.in -s 

/*
*    dot -T jpg -o callgraph.jpg graph.in
*/


pid$1:::entry
{
    @call_stats[ufunc(ucaller), strjoin(strjoin(probemod,"`"), probefunc)] = count();

x2c3z4

mpathadm list mpath-support
mpathadm show mpath-support libmpscsi_vhci.so
mpathadm list initiator-port
mpathadm show initiator-port iqn.1986-03.com.sun:01:00144fd4df78.55e515ac,4000002a00ff
mpathadm show initiator-port 10000000c957a469
mpathadm show initiator-port w500605b0061047f0
mpathadm show initiator-port 2101001b32290c3a
mpathadm list logical-unit
mpathadm show logical-unit /dev/rdsk/c0t600A0B800026D63A00001CE75565EFBEd0s2
mpathadm failover logical-unit /dev/rdsk/c0t600A0B800026D63A00001CE75565EFBEd0s2

x2c3z4

#!/bin/bash
arch=""
if [[ `uname -i` = "i86pc" ]];then
  arch="i386"
else
  arch="sparc"
fi
echo "Arch: $arch"
echo "+ +" > /root/.rhosts
svcadm enable svc:/network/login:rlogin

x2c3z4

for i in {1..9}; do dd if=/dev/zero of=/tmp/file$i bs=1G count=1 &> /dev/null; done
zpool create tank raidz1 /tmp/file1 /tmp/file2 /tmp/file3 raidz1 /tmp/file4 /tmp/file5 /tmp/file6  raidz1 /tmp/file7 /tmp/file8 /tmp/file9

zfs set compression=lz4 tank/log
root@hotcat:/tank# zfs get compressratio tank/test tank/log
NAME       PROPERTY       VALUE  SOURCE
tank/log   compressratio  2.44x  -
tank/test  compressratio  1.00x  -

x2c3z4

for i in {1..4}; do dd if=/dev/zero of=/tmp/file$i bs=1G count=1 &> /dev/null; done
for i in {1..4}; do losetup loop$i /tmp/file$i; done
mdadm -C /dev/md0 -l 0 -n 4 /dev/loop1 /dev/loop2 /dev/loop3 /dev/loop4

pvcreate /dev/md0
vgcreate tank /dev/md0
lvcreate -l 100%FREE -n videos tank
mkfs.ext4 /dev/tank/videos
mkdir -p /tmp/tank/videos
mount -t ext4 /dev/tank/videos /tmp/tank/videos

x2c3z4

#!/usr/sbin/dtrace -s

#pragma D option flowindent

::$1:entry
{
  stack();
  self->in = 1;
  /*printf("args[0]=%d args[1]=%d args[2]=%d",args[0], args[1], args[2]);*/
}