grep command – nixCraft

Shell Script To Turn On or Off PHP Uploads For Php5-fpm/Apache/Nginx/Lighttpd Web Servers

in Security, Web Server last updated September 5, 2016

A simple shell script wrapper to disable or enable PHP 5 upload support in an Apache or Nginx or Lighttpd web server. The script look for file_uploads directive in php.ini file and change its state from ON to OFF or vice-versa.

Shell Script To Get Data Center Information, IP Owner, City and Country From Domain Name

in Domain, Monitoring, Networking last updated March 12, 2010

A sample shell script to print domain ip address hosting information such as location of server, city, ip address owner, country and network range. This is useful to track spammers or research purpose.

A shell script to check domain serial numbers across all name servers

in Domain last updated March 7, 2009

A shell script to check domain serial numbers across all name servers

Iptables block ip address – Security Shell Script

in Firewall last updated December 20, 2008

Shell script to drop or block bulk of IP address or subnets using Linux iptables.

Shell Script To Check A Record For Given Domain or Hostname On All Nameservers

in Domain last updated July 30, 2008

Linux Shell script to verify dns ‘A’ record for given hostname or domain using master and slave dns server.

NAS Backup Server Disk Monitoring Shell Script

in Backup, Diskadmin, Monitoring last updated September 13, 2008

A SHELL script to monitor NAS backup server and send an email when running out of backup disk space.

Shell Script To Auto Restart Apache HTTPD When it Goes Down / Dead

in HTTP, Web Server last updated July 22, 2008

A shell script to restart httpd / Apache from a cron job. It will monitor apache every 5 minute and restart the same if it goes down.

Shell Script Searches For A Single Word Pattern Recursively

in Academic last updated May 5, 2008

#!/bin/bash
# Write a shell script that searches for a single word pattern recursively
# in the current working directory and display the numbers of times it occurred.
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# ----------------------------------------------------------------------
echo -n "Enter one word pattern : "
read pattern
# wc  - word count
COUNT=$(grep -wr "${pattern}" . 2> /dev/null | wc -l)
echo "${pattern} occurred ${COUNT} times."

#!/bin/bash

# Write a shell script that searches for a single word pattern recursively

# in the current working directory and display the numbers of times it occurred.

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# ----------------------------------------------------------------------

echo -n "Enter one word pattern : "

read pattern

# wc - word count

COUNT=$(grep -wr "${pattern}" . 2> /dev/null | wc -l)

echo "${pattern} occurred ${COUNT} times."

Script to update user password in batch mode using pwgen and chpasswd

in Security last updated October 23, 2008

#!/bin/bash
# Script to update user password in batch mode
# You must be a root user to use this script
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project 
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# ----------------------------------------------------------------------
# /root is good place to store clear text password
FILE="/root/batch.passwd"

# get all non-root user account
# By default on most linux non-root uid starts
# from 1000
USERS=$(awk -F: '{ if ( $3 > 1000 ) print $1}' /etc/passwd)

# create file with random password
echo "Generating file, please wait..."

# overwrite file, this is bash specific a better solution is cat > $FILE
>$FILE

for u in $USERS
do
   p=$(pwgen -1 -n 8) # create random password
   echo "$u:$p" >> $FILE # save USERNAME:PASSWORD pair
done
echo ""
echo "Random password and username list stored in $FILE file"
echo "Review $FILE file, once satisfied execute command: "
echo "chpasswd &lt; $FILE"

# Uncomment following line if you want immediately update all users password,
# be careful with this option, it is recommended that you review $FILE first
# chpasswd < $FILE

#!/bin/bash

# Script to update user password in batch mode

# You must be a root user to use this script

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# ----------------------------------------------------------------------

# /root is good place to store clear text password

FILE="/root/batch.passwd"

# get all non-root user account

# By default on most linux non-root uid starts

# from 1000

USERS=$(awk -F: '{ if ( $3 > 1000 ) print $1}' /etc/passwd)

# create file with random password

echo "Generating file, please wait..."

# overwrite file, this is bash specific a better solution is cat > $FILE

>$FILE

for u in $USERS

p=$(pwgen -1 -n 8) # create random password

echo "$u:$p" >> $FILE # save USERNAME:PASSWORD pair

done

echo ""

echo "Random password and username list stored in $FILE file"

echo "Review $FILE file, once satisfied execute command: "

echo "chpasswd < $FILE"

# Uncomment following line if you want immediately update all users password,

# be careful with this option, it is recommended that you review $FILE first

# chpasswd < $FILE