OSS Robot

check ‘dmesg’ for new drive
create partition table with fdisk
format disk. 'mkfs -t ext3 /dev/hdc1‘
mount the drive 'mount -t ext3 /dev/sdc1 /mount/dir'

Uncategorized

Usage: python ./scriptname.py oldword newword sourcfile.txt newfile.txt

#!/usr/local/bin/python
import os, sys
usage = "usage: %s search_text replace_text [infile [outfile]]” %         os.path.basename(sys.argv[0])

if len(sys.argv) < 3:
     print usage
else:
stext = sys.argv[1]
rtext = sys.argv[2]
input = sys.stdin
output = sys.stdout
if len(sys.argv) > 3:
input = open(sys.argv[3])
if len(sys.argv) > 4:
output = open(sys.argv[4], ‘w’)
for s in input.xreadlines():
output.write(s.replace(stext, rtext))

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Shell script to send email notification if hdd status reaches certain threshold.

#!/bin/sh
Drives=`df | perl -e 'while(<>) { if((/9[5-9]%/ or /100%/) and not /\/dev\/sdb1/) { print$_; }}’` email=”email@email.com”

if [ "$Drives" ]; then
mail -s “[disk status] $HOSTNAME full” $email << EOM
$HOSTNAME is critically low on space. View df message below.
$Drives
EOM

fi

Uncategorized

Install iperf

apt-get install iperf

Listen on machine #1

$ iperf -s -P 2 -i 5 -p 5999 -f M

Send packets on machine #2

iperf -c backupserv -P 1 -i 5 -p 5999 -f M -t 60 -T 1

Results:
————————————————————
Client connecting to backupserv, TCP port 5999
TCP window size: 0.02 MByte (default)
————————————————————
[  3] local 192.168.1.5 port 49711 connected with 192.168.1.3 port 5999
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 5.0 sec    562 MBytes    112 MBytes/sec
[  3]  5.0-10.0 sec    562 MBytes    112 MBytes/sec
[  3] 10.0-15.0 sec    561 MBytes    112 MBytes/sec
[  3] 15.0-20.0 sec    561 MBytes    112 MBytes/sec
[  3] 20.0-25.0 sec    562 MBytes    112 MBytes/sec
[  3] 25.0-30.0 sec    561 MBytes    112 MBytes/sec
[  3] 30.0-35.0 sec    561 MBytes    112 MBytes/sec
[  3] 35.0-40.0 sec    561 MBytes    112 MBytes/sec
[  3] 40.0-45.0 sec    561 MBytes    112 MBytes/sec
[  3] 45.0-50.0 sec    561 MBytes    112 MBytes/sec
^C[  3]  0.0-50.8 sec  5707 MBytes    112 MBytes/sec

Linux, Networking, Uncategorized Networking

sudo /sbin/ifconfig eth0:0 192.168.1.50 up

sudo /sbin/ifconfig eth0:0 192.168.1.50 down

Uncategorized

dd if=/dev/zero bs=1M count=150 | bzip2 -c > 150mb.bz2

Linux, Uncategorized

Run script in crontab for server backups, cuts down on number of lines in crontab and staggers rsync over time.

01 * * * * /path/to/file/backu_script.py

#!/usr/bin/python
import time
import os
current_hour=time.strftime("%H")
backup_user="pse_backup"

#element 0 = servername, element 1 = hour to backup
backup_time={'pse01':'10','pse02':'17'}
servers={'pse01':['/home','/var/log'], ‘pse02′:['/home','/var/log','/etc']}

for k, v in backup_time.iteritems():
hour = v
server = k
if hour == current_hour:
print server + ” is being backed up!”
for name, paths in servers.iteritems():
if server == name:
#Run Rsync cmd.
for path in paths:
os.system(”rsync -van -e ’ssh -i /home/pse_backup/.ssh/pse_backup_key’ “+backup_user+”@”+server+”:” + path + ” /data/backups/” + server + path)

Uncategorized

gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=finished.pdf file1.pdf file2.pdf

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