Day: 21 Feb 2016

Deleting Empty Directories Script

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#!/bin/bash

if [ x”$1″ = “x” ]; then
echo -n “Please enter directory where to delete empty folders: ”

while read dir
do
test -z “$dir” && {

echo -n “Please enter directory: ”
continue
}
break
done

else
dir=$1
fi
if [ ! -d $dir ]; then
echo “No such directory”
exit 1
fi

DirList=/tmp/ditlist.tmp
find $dir -type d > $DirList
dirs=cat $DirList
for dir in $dirs
do
[ ls $dir | wc -l -lt 1 ] || continue
echo -n “Remove empty directory $dir: [No/yes] ”
read answer
if [ “$answer” = “yes” ]; then
rmdir “$dir”
fi
done

Remote Updating Packages Script

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#!/bin/bash

server_apt=(
ns1.domain.tld
ns2.domain.tld
srvcld01.domain.tld
)
server_yum=(
ns3.domain.tld
)
for server in ${server_apt[@]}
do
echo $server
ssh root@$server ‘apt-get update && apt-get -y upgrade’
done
for server in ${server_yum[@]}
do
echo $server
ssh root@$server ‘yum -y update’
done

Adding Proxy for Ftp, Http & Https Script

kanakamedalachaitanyaLeave a comment

#!/bin/bash

proxyset=$http_proxy

proxy=”proxy.yoursite.com”
port=”3128″
username=”youruser”
password=”yourpass”

setproxy(){
setenv
setfile
}

setenv(){
if [ -n “$username” ]; then
proxy=”http://$proxy:$port/”
else
proxy=”http://$username:$password@$proxy:$port/”
fi

export http_proxy=$proxy
export HTTP_PROXY=$proxy
export https_proxy=$proxy
export HTTPS_PROXY=$proxy
export ftp_proxy=$proxy
export FTP_PROXY=$proxy
export all_proxy=$proxy
export ALL_PROXY=$proxy
echo “proxy added”
}

setfile(){
#edit info in the file
echo “Acquire::http::proxy \”$proxy\”;\nAcquire::ftp::proxy \”$proxy\”;\nAcquire::https::proxy \”$proxy\”;” | sudo tee /etc/apt/apt.conf.d/95proxies
}

removeproxy(){
removeenv
removefile
echo “proxy removed”
}

removeenv(){
unset HTTP_PROXY
unset http_proxy
unset HTTPS_PROXY
unset https_proxy
unset ftp_proxy
unset FTP_PROXY
unset all_proxy
unset ALL_PROXY
}

removefile(){
sudo bash -c “rm /etc/apt/apt.conf.d/95proxies”
sudo bash -c “rm /etc/apt/apt.conf.d/95Proxies”
}

if [ -n “$proxyset” ];
then
removeproxy
else
setproxy
fi

Linux Server Utilization

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#!/bin/bash

date;
uptime

Currently connected
w

Last logins
last -a |head -3

Disk & Memory Usage
df -h | xargs | awk ‘{print “Free/total disk: ” $11 ” / ” $9}’
free -m | xargs | awk ‘{print “Free/total memory: ” $17 ” / ” $8 ” MB”}’
start_log=head -1 /var/log/messages |cut -c 1-12
oom=grep -ci kill /var/log/messages
echo -n “OOM errors since $start_log :” $oom

Utilization & Processes
top -b |head -3
echo
top -b |head -10 |tail -4

Open TCP Ports
nmap -p- -T4 127.0.0.1

Current Connections
ss -s

Processes
ps auxf –width=200

vmstat
vmstat 1 5