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Top Forums Shell Programming and Scripting Easy if conditional question. Post 302401540 by durden_tyler on Saturday 6th of March 2010 05:32:08 PM
Old 03-06-2010
Quote:
Originally Posted by SlickStretch
... a simple script which will ask the user to press a key between 3-7. If they press a key that's not between 3-7, it will tell the user such.
...
Maybe something like this ?

Code:
$ 
$ cat -n testkey.sh
     1  #!/bin/bash
     2
     3  echo -n "Press a key from 3-7 : "
     4  read CHR
     5  echo "You entered $CHR"
     6
     7  # Using case statement
     8  case "$CHR" in
     9    [3-7])  echo "It's in the range [3,7]";;
    10    *)      echo "It's NOT in the range [3,7]";;
    11  esac
    12
    13  # Using if branch
    14  if (( $CHR >= 3 && $CHR <= 7 ))
    15  then
    16    echo "Once again, it's in the range [3,7]";
    17  else
    18    echo "Once again, it's NOT in the range [3,7]";
    19  fi
    20
$ 
$ ./testkey.sh
Press a key from 3-7 : 2
You entered 2
It's NOT in the range [3,7]
Once again, it's NOT in the range [3,7]
$ 
$ ./testkey.sh
Press a key from 3-7 : X
You entered X
It's NOT in the range [3,7]
Once again, it's NOT in the range [3,7]
$ 
$ ./testkey.sh
Press a key from 3-7 : 5
You entered 5
It's in the range [3,7]
Once again, it's in the range [3,7]
$ 
$

tyler_durden
 

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gitaction(1)						      General Commands Manual						      gitaction(1)

NAME
gitaction - GNU Interactive Tools - per file type action script SYNTAX
gitaction directory file .gitaction directory file DESCRIPTION
gitaction is a script that executes a different action for each file type specified. It is called by the gitfm program when pressing F2 or ^Xa (see the gnuitrc.TERM configuration files in the gnuit manual). The first parameter is the current directory name and the second one is the file name to be matched against the default patterns. The matching is done using the shell 'case' statement. If you press F2 or ^Xa on a *.html file, gitfm will invoke a browser to view it, if you press F2 or ^Xa on a *.tar.gz file, gitfm will list the tar archive contents, if you press the same keys on a *.gz file, gitfm will display its uncompressed contents on the screen, etc ... If you press F2 or ^Xa on a *.gif file or *.jpg file and you have the zgv utility installed, you will be able to see it. If you want to change the gif/jpeg viewer, all you need to do is to change its name in the gitaction script. There are many more file types and viewers that gitaction knows about. In addition, if you are running under GNOME, gnome-open is used, and on MacOS, open(1) is used. see(1) and metamail(1) are also used as fallbacks. If all else fails, the file is displayed using $GNUIT_PAGER. Feel free to change this. If you want to find out what the default action for each file type is (or if you want to modify it), just read/modify the gitaction script. The script can be easily enhanced. Just read it. The .gitaction script is a local version of the gitaction script. When started, gitaction tries to search a script called .gitaction in the current directory and, if it finds it, it starts it. If .gitaction's exit code is 0 ( .gitaction couldn't find a matching pattern), gitac- tion starts its own case statement trying to match the current file name (the second parameter) against its default patterns. The .gitaction script *must* be executable. An example of .gitaction can be found in the directory gitfm is installed into. (usually /usr/local/bin or /usr/bin) Debian users can find it in /usr/share/doc/gnuit/examples/. You should copy the example to the current direc- tory or your home directory and then modify it. BUGS
Please send bug reports to: gnuit-dev@gnu.org SEE ALSO
gitfm(1) gitps(1) gitview(1) gitmount(1) gitkeys(1) gitrgrep(1) gitunpack(1) AUTHORS
Tudor Hulubei <tudor@cs.unh.edu> Andrei Pitis <pink@pub.ro> Ian Beckwith <ianb@erislabs.net> (current maintainer). gitaction(1)
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