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Full Discussion: Flow Control in CSH
Top Forums Shell Programming and Scripting Flow Control in CSH Post 302551465 by hfreyer on Tuesday 30th of August 2011 12:48:27 PM
Old 08-30-2011
You are mixing syntax of csh with sh/bash elements.
Exclamation marks in strings need to be escaped because of their special meaning in csh.
Code:
#!/bin/csh
set users = (user1 user2 user3)
echo The users are
echo $users[*]
set found = 0
while ( $found == 0 )
  echo Enter the USER NAME 
  set USER_NAME = $<
  foreach user ($users)
    if ( $USER_NAME == $user ) then
      echo mkdir root/project/$USER_NAME
      set found = 1
      break
    endif
  end
  if ( $found == 0 ) then
    echo "INVALID USER: $USER_NAME \!\!\!"
  endif
end

But possibly it is a better idea to learn ksh/bsh/bash scripting.
csh and tcsh are good for interactive working, but not so much for scripting.
Have a look at Advanced Bash-Scripting Guide
 

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LEARN ABOUT OPENSOLARIS

ppmtosixel

ppmtosixel(1)                                                 General Commands Manual                                                ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.  The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
              pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order  of  magni-
              tude larger than a compressed file and prints much slower.

       -margin
              If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
              fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater  than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

                                                                   26 April 1991                                                     ppmtosixel(1)
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