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Full Discussion: Shell script to rename or change file extension case.
Top Forums UNIX for Dummies Questions & Answers Shell script to rename or change file extension case. Post 302385745 by Sheldon on Saturday 9th of January 2010 01:21:42 PM
Old 01-09-2010
Code:
#!/bin/sh

fromext="$1"
toext="$2"

usage () {
  echo "Usage: $0 fromext toext"
  echo "Example: $0 htm html"
}

if [ -z "$1" ] || [ -z "$2" ]
then
  echo "Too few arguments."
  usage
  exit 0
fi
if [ -n "$3" ]
then
  echo "Too many arguments."
  usage
  exit 0
fi

filelist=`find . -type f -name "*.$fromext"`

changeext () {
  while read file
  do
    newname=`echo "$file" | sed "s/\(.*\.\)${fromext}$/\1$toext/"`
    mv "$file" "$newname"
  done
}

if [ -n "$filelist" ]
then
  echo "$filelist" | changeext
else
  echo "No files to process."
fi


exit 0

Can anyone remove recursive method here and change the file to work like this:

sh filename.sh failname.txt failname.TXT(whatever extension)

where failname.txt is changing its extension to failname.TXT or failname.mp3

Thanks.
 

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LEARN ABOUT SUNOS

noecho

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							    echo(3XCURSES)
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