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Full Discussion: (t)csh command line arguments issues
Homework and Emergencies Homework & Coursework Questions (t)csh command line arguments issues Post 302741113 by kcoll025 on Friday 7th of December 2012 12:13:27 PM
Old 12-07-2012
(t)csh command line arguments issues
1. The problem statement, all variables and given/known data:

create a shell script, chExt.sh that takes one or more parameters, where the first is a desired extension and the remainder are names of files to be renamed. For each file in the command line, this script should rename the file, as above, if the file exists or print the error message described in the previous step if the file does not exist.
For example,

ls > crocodile.foo
echo bark > dingo.bar
./chExt.sh dat crocodile.foo bogusName.foo dingo.bar

should result in crocodile.foo being renamed crocodile.dat, an error message "bogusName.foo: No such file", and dingo.bar being renamed dingo.dat.




2. Relevant commands, code, scripts, algorithms:
Code:
#!/bin/csh

set ext = $1
shift

foreach file ( $*  )
# with double quotes show all to one name
# with single quotes foreach: No match.
# without quotes separate king cobra.dat into 2 files
echo "original input" "$file"
set oldName = "$file"
if ( -e "$oldName") then
set newName= (`echo "$oldName" | sed "s/\(.*\)\..*/\1/"`)
set newName = "$newName"."$ext"

if ("$file" != "$newName") then
mv "$file" "$newName"
endif
else
    echo "$file"": No such file"
endif


3. The attempts at a solution (include all code and scripts):
Line 6 : foreach file ( $* )
I need it to be able to read in 'cpp' 'file.dat' 'king cobra.dat'
as 3 variables, but i can only get it to do 'king' and 'cobra.dat'
i tried putting double quotes around "$*" in my foreach but that causes the variable to be 'file.dat king cobra.dat' as one long variable name


4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Old Dominion University, Norfolk, Virginia, USA, Prof. Zeil, CS252<http://www.cs.odu.edu/~cs252/>


please help ASAP, it's due by tonight and i've been stuck on this for days now.
Last edited by Corona688; 12-07-2012 at 02:42 PM..
 

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LEARN ABOUT DEBIAN

rename

rename(3tcl)						       Tcl Built-In Commands						      rename(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       rename - Rename or delete a command

SYNOPSIS

       rename oldName newName
_________________________________________________________________

DESCRIPTION

       Rename the command that used to be called oldName so that it is now called newName.  If newName is an empty string then oldName is deleted.
       oldName and newName may include namespace qualifiers (names of containing namespaces).  If a command is renamed into a different namespace,
       future invocations of it will execute in the new namespace.  The rename command returns an empty string as result.

EXAMPLE

       The  rename command can be used to wrap the standard Tcl commands with your own monitoring machinery.  For example, you might wish to count
       how often the source command is called:
	      rename ::source ::theRealSource
	      set sourceCount 0
	      proc ::source args {
		  global sourceCount
		  puts "called source for the [incr sourceCount]'th time"
		  uplevel 1 ::theRealSource $args
	      }

SEE ALSO

       namespace(3tcl), proc(3tcl)

KEYWORDS

       command, delete, namespace, rename

Tcl																      rename(3tcl)
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