03-04-2008
Simple Question
Hi Guys,
I've been learning UNIX for the past couple of days and I came across this exercise, I can't get my head around it, so I would be ever so grateful if I could receive some sort of help or direction with this.
Create a file with x amount of lines in it, the content of your choice.
Write a script named 'firstline' that takes two arguments. The first being a line of text, the second being your newly created file. The script should take the first argument and insert it into the very top (the first line) of the file named in your second argument.
Take a copy (backup) and amend the above script so that it now inserts the first argument into the middle of the file.
The problem I have is that I dont know how to edit a text using shell scripts.
Any help would be greatly appreciated
Thanks,
aforball
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LEARN ABOUT OPENDARWIN
tclsh
tclsh(1) Tcl Applications tclsh(1)
__________________________________________________________________________________________________________________________________________________
NAME
tclsh - Simple shell containing Tcl interpreter
SYNOPSIS
tclsh ?-encoding name? ?fileName arg arg ...?
_________________________________________________________________
DESCRIPTION
Tclsh is a shell-like application that reads Tcl commands from its standard input or from a file and evaluates them. If invoked with no
arguments then it runs interactively, reading Tcl commands from standard input and printing command results and error messages to standard
output. It runs until the exit command is invoked or until it reaches end-of-file on its standard input. If there exists a file .tclshrc
(or tclshrc.tcl on the Windows platforms) in the home directory of the user, interactive tclsh evaluates the file as a Tcl script just
before reading the first command from standard input.
SCRIPT FILES
If tclsh is invoked with arguments then the first few arguments specify the name of a script file, and, optionally, the encoding of the |
text data stored in that script file. Any additional arguments are made available to the script as variables (see below). Instead of
reading commands from standard input tclsh will read Tcl commands from the named file; tclsh will exit when it reaches the end of the
file. The end of the file may be marked either by the physical end of the medium, or by the character, "