Unix Commands

GENERAL COMMANDS

1. Check all environment Variables

$ env $ printenv

2. Grep Command

grep '2012-03-27' /path/tomcat/apache-tomcat-6/logs/catalina.out | grep '9927773'

SVN COMMANDS

1. Checkout a code base

$ svn checkout <checkout url> OR $ svn co <chekout url>

2. Update a code base

$ svn update

3. Check-in/Commit files

$ svn ci -m “commit message”

4. Check current svn check-in details

$ svn info

COPY COMMANDS

1. Copy file from one server to another

We have a file (/prod/myfile.zip) in Server 1 and needs to be copied to Server 2 (/data/test/)

Server 1 (ip: 10.5.55.20) - Source Server

  username: ranjith

  password: sekar   

Server 2 (ip: 10.3.33.90) - Destination Server

  username: anbu

  password: selvan

Now login to Server 1 and enter below command

$ scp /prod/myfile.zip anbu@10.3.33.90:/data/test/ $ <enter password: selvan>

DELETE COMMANDS

1. Delete a folder in current directory

$ rm -rd <folder>

2. Delete a folder and its sub folders

$ rm -rf <folder>

FILE MANIPULATION COMMANDS

1.View Content of a file (less command)

$ less <filename>

1.1 To traverse the file

$ spacebar => Next page $ b => previous page $ g => top of the page $ shift + g -=> bottom of the page

1.2 To search a string

type /<string> and enter

2.Delete a content of file

cat /dev/null > processLog.txt

3. Create shortcut for a file.

ln -fs /folder1/folder1-subfolder/index.html /folder2/folder2-subfolder/