bash | Bash Script - Part 3

Category Archives: bash

Bash: Find all .hidden files but ignore .htaccess file

October 23, 2013bashapache, find, htaccessadmin

A bash command to search for all hidden files recursively in the current directory but ignore apache .htaccess files.

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1 find . -type f \( -iname ".*" ! -iname ".htaccess" \)

Snippet to check root privileges

October 23, 2013bashprivileges, root, snippetadmin

Snippet to use in your scripts to execute them only if you have root privileges.
犀利士

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1 if [ $UID -ne 0 ]; then  
2 echo "Superuser privileges are required to run this script." 
3 echo "e.g. "sudo $0"" 
4 exit 1 fi

Split and join files

October 23, 2013bashcommand, files, join, splitadmin

How to split a file in chunks and how to put them back together.

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01 ### SPLIT LONG:
02 split --bytes=5m --suffix-length=2 --numeric-suffixes image.iso image.iso.part_
03 split --verbose --bytes=5m --suffix-length=2 --numeric-suffixes image.iso image.iso.part_
04 
05 
06 ### SPLIT SHORT:
07 split -b 5m -a 2 -d image.iso image.iso.part_
08 
09 
10 split --verbose -b 5m -a 2 -d image.iso image.iso.part_
11

HTTP Proxy Checker in bash

October 23, 2013bashchecker, proxy, scriptadmin

Usefull script to check if a proxy is alive.

### RESTORE

cat image.iso.part_* > image.iso

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01 #!/bin/bash
06 # HTTP Proxy Server's IP Address (or URL)
07 
08 proxy_server=$1
09 
10 # HTTP Proxy Server's Port Number
11 
12 port=$2
13 
14 
15 # We're trying to reach this url via the given HTTP Proxy Server
16 # (http://www.google.com by default)
17 
18 url="http://www.google.com"
19 
20 # Timeout time (in seconds)
21 timeout=20
22 
23 # We're fetching the return code and assigning it to the $result variable
24 result=`HEAD -d -p http://$proxy_server:$port -t $timeout $url`
25 
26

Google URL shortener script

October 23, 2013bashgoogle, script, shorteneradmin

Maybe it’s no longer working

# If the return code is 200, we've reached to $url successfully

if [ "$result" = "200 OK" ]; then

    echo "1 (proxy works)"

# Otherwise, we've got a problem (either the HTTP Proxy Server does not work

# or the request timed out)

else

    echo "0 (proxy does not work or request timed out)"

fi

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01 #!/bin/bash
12 # Google url shortener bash script
13 # We're fetching the return code and assigning it to the $result variable
14 # http://ggl-shortener.appspot.com/instructions/
15 
16 app='http://ggl-shortener.appspot.com/?url='
17 url="$1"
18 protocol=`echo "$1" | sed -e "/^http:///g"`
19 
20 if [ -z "$1" ]; then
21

Fetch last.fm song from bash

October 23, 2013bashadmin

This script let you get a song from last.fm.

 echo -e "e.g. `basename $0` http://url";

Remove RSA key for ssh authorized hosts file

October 23, 2013bashcommand, key, sshadmin

How to remove an ssh host by name or ip from your authorized hosts file.

else

 if [ ! "$protocol" ]; then

Analyse Access Log with awk for most common ip addresses

October 23, 2013bashanalize, apache, command, logadmin

Some cat with awk and then sort to find out what ips are most common in your apache access.log file. Remember that all ips are include here. Bots, crawlers, clients…

 curl -s "$app$url" | sed -e 's/{"short_url":"//' -e 's/"}/n/g'

Empty a database table command

October 23, 2013bashcommand, empty, mysqladmin

How to empty a mysql database. Forget about delete * command

 else

SSH Access Email Alert for bashrc

October 23, 2013bashemail, monitor, sshadmin

You want to know instantly who has logged in your ssh server. You can be emailed automatically including in .bashrc file of the user you want to monitor following co必利勁
mmands:

 repl=`echo "$1" | sed -e 's/^/http:///g'`

1	if [ $UID -ne 0 ]; then
2	echo "Superuser privileges are required to run this script."
3	echo "e.g. "sudo $0""
4	exit 1 fi

01	### SPLIT LONG:
02	split --bytes=5m --suffix-length=2 --numeric-suffixes image.iso image.iso.part_
03	split --verbose --bytes=5m --suffix-length=2 --numeric-suffixes image.iso image.iso.part_
04
05
06	### SPLIT SHORT:
07	split -b 5m -a 2 -d image.iso image.iso.part_
08
09
10	split --verbose -b 5m -a 2 -d image.iso image.iso.part_
11

01	#!/bin/bash
06	# HTTP Proxy Server's IP Address (or URL)
07
08	proxy_server=$1
09
10	# HTTP Proxy Server's Port Number
11
12	port=$2
13
14
15	# We're trying to reach this url via the given HTTP Proxy Server
16	# (http://www.google.com by default)
17
18	url="http://www.google.com"
19
20	# Timeout time (in seconds)
21	timeout=20
22
23	# We're fetching the return code and assigning it to the $result variable
24	result=`HEAD -d -p http://$proxy_server:$port -t $timeout $url`
25
26

01	#!/bin/bash
12	# Google url shortener bash script
13	# We're fetching the return code and assigning it to the $result variable
14	# http://ggl-shortener.appspot.com/instructions/
15
16	app='http://ggl-shortener.appspot.com/?url='
17	url="$1"
18	protocol=`echo "$1" \| sed -e "/^http:///g"`
19
20	if [ -z "$1" ]; then
21