Commands by Dhinesh

Commands by Dhinesh (13)

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Get file from remote system

scp username@192.168.1.22:/directory/path . Get the file from the remote system
This is sample output - yours may be different.
0

scp username@host|ipaddress:/directory/path .

Dhinesh · 2013-10-23 12:35:18 11
List detailed information about a ZIP archive

list zipfile info in long Unix ``ls -l'' format.
This is sample output - yours may be different.
2

zipinfo -l <pathtozipfile>

Dhinesh · 2011-12-16 11:15:12 4
open ports with iptables

This command will open tcp port 3000 in your machine
This is sample output - yours may be different.
-2

sudo iptables -I INPUT -p tcp --dport 3000 -j ACCEPT

Dhinesh · 2011-12-16 10:39:13 32
Unlock more space form your hard drive

This command changes the reserved space for privileged process on '/dev/sda' to 1 per cent.
This is sample output - yours may be different.
6

tune2fs -m 1 /dev/sda6

Dhinesh · 2011-12-07 10:20:01 7
Display standard information about device

Queries the specified ethernet device for associated driver information Show Sample Output
This is sample output - yours may be different.
```
dhinesh@ubuntu:~$ sudo  ethtool -i eth0
driver: pcnet32
version: 1.35
firmware-version: 
bus-info: 0000:02:01.0
dhinesh@ubuntu:~$ 
```
1

sudo ethtool -i eth0

Dhinesh · 2011-12-01 13:48:09 11
Change the terminal foreground color

This will change your terminal foreground colour.Depending on the system, tput uses the terminfo or termcap database, as well as looking into the environment for the terminal type. You can use "setb" to set terminal background colour
This is sample output - yours may be different.
0

tput setf 4

Dhinesh · 2011-11-22 11:42:48 6
Limit the cpu usage of a process

This will limit the average amount of CPU it consumes. Show Sample Output
This is sample output - yours may be different.
```
sudo cpulimit -p 4799 -l 10
Process 4799 detected
```
21

sudo cpulimit -p pid -l 50

Dhinesh · 2011-11-21 08:43:57 11
Encryption file in commad line

This will encrypt your single file and create a filename.gpg file. Option: * -c : Encrypt with symmetric cipher To decrypt dhinesh@ubuntu:~$ gpg -c sample.rb.gpg Show Sample Output
This is sample output - yours may be different.
```
dhinesh@ubuntu:~$ gpg -c sample.rb
Enter passphrase: 

Repeat passphrase:
dhinesh@ubuntu:~$
```
4

gpg -c <filename>

Dhinesh · 2011-11-21 06:26:59 7
To know the IP address of the machine current running on the network

List all the machine ip's currently running on your network Show Sample Output
This is sample output - yours may be different.
```
192.168.1.1
192.168.1.2
192.168.1.7
192.168.1.8
```
-1

fping -g 192.168.1.1 192.168.1.10 -r 1 | grep -v unreachable | awk '{print $1}'

Dhinesh · 2011-11-19 09:11:56 6
Adding a startup script to be run at bootup Ubuntu

This script will run each time you boot up.The script must be in /etc/init.d directory.
This is sample output - yours may be different.
2

sudo update-rc.d <scriptname> defaults

Dhinesh · 2011-11-19 08:55:38 7

nmap port scanning

TCP Connect scanning for localhost and network 192.168.0.0/24 Show Sample Output

nmap -v -sT 192.168.0.0/24

Dhinesh · 2011-11-19 07:06:52 20

Redirect tar extract to another directory

The command extracting the tar contents into particular directory ...
This is sample output - yours may be different.
12

tar xfz filename.tar.gz -C PathToDirectory

Dhinesh · 2011-11-17 12:43:56 9
Create the directoty recursively
This is sample output - yours may be different.
1

mkdir /home/dhinesh/dir1/{dir2,dir3,dir4}/file1.txt -p

Dhinesh · 2011-05-18 10:40:54 4

What's this?

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Remove trailing space in vi

Create a false directory structure for testing your commands

This will make a false directory with the same file names as whatever directory you choose. This is wise to use when testing scripts that alter contents, filenames, or move files. I wrote this after an OOPS I made when renaming a directory of JPGs, PNGs, PSDs that were mixed. I recommend this as I lost over 2000 vacation pictures and some graphics I designed for software and web sites. :( NOTE: This only creates name copies, that data itself is not copied.

Convert seconds to human-readable format

This example, for example, produces the output, "Fri Feb 13 15:26:30 EST 2009"

Printout a list of field numbers (awk index) from a CSV file with headers as first line.

Useful to identify the field number in big CSV files with large number of fields. The index is the reference to use in processing with commands like 'cut' or 'awk' involved.

tcpdump sniff pop3,imap,smtp and http

Remove security limitations from PDF documents using ghostscript (for Windows)

#4345 also works under windows

list files recursively by size

Display calendar with specific national holidays and week numbers

NB when you run this gcal command in your shell, holidays are highlighted but this highlighting does not show in the sample output (above). To find full details on gcal options: gcal --long-help | less Example for United States, Pennsylvania: gcal -K -q US_PA 2009 # display holidays in USA/Pennsylvania for 2009 (with week numbers) Example for Hong Kong: gcal -K -q HK 2009 # display holidays in Hong Kong for 2009 (with week numbers)

create a temporary file in a command line call

Sometimes you have a script that needs and inputfile for execution. If you don't want to create one because it may contain only one line you can use the `

Delete recursively only empty folders on present dir

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