script is a standard Unix command that records a script of
your interaction with the Unix system. Once it's started, it works "in the
background", meaning that you continue to work normally, but the script
session is dumping everything that shows up on your screen (more or less*) into
some file. It probably would be better called carbon-copy.
The most
common use of script is to document terminal session. By running script you
log all the information displayed on your terminal. You can then print the log
file or view it with an editor. In a way script is a specialized tee for the
shell.
To start a script session, issue the command script to the
Unix shell; then continue on working normally as long as you like. If you don't
provide a file name to the script command, it places its output in a default
file named typescript, you can name your script file hwn.txt, where n
is the number of the programming assignment you're doing.
Whatever you do, do not
use the name of your program's source code file as the filename for the output
of the script command. If you type script hello.c, the output from the script
command will overwrite and destroy whatever used to be in hello.c
When you decide you don't need to record stuff anymore, exit
from the scripting session by issuing the command exit to the Unix shell.
When you run script a new shell is forked. This new
shell makes a complete copy of everything displayed on your terminal. It reads
standard input and output for your terminal tty and stores the data in a file.
The default filename is typescript.
To exit from a script session you simply press Ctrl-D
or type exit.
Format of the script command.
script [ -a ] [ typescript_file ]
-a Append the output of script to file.
Normally script begins writing to a new file; if the file exists it is
overwritten unless you specify the -a option.
This is the only option present
in all versions of Unix.
Exp :
script log1.txt
script –a log1.txt
till then...
njoy the simplicity.......
