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Full Discussion: Ignoring file name case and decrypting it.
Top Forums Shell Programming and Scripting Ignoring file name case and decrypting it. Post 302480157 by frans on Tuesday 14th of December 2010 06:35:40 AM
Old 12-14-2010
Using Scrutinizer's proposition, with recent version of bash:
Code:
decrypt(){
  case ${1,,} in 
    *.zip) unzip "$1" ;;
    *.gpg) gpg "$1" ;;
    *) echo "Unknown filetype" ;;
  esac
}

Man bash
Code:
${parameter^pattern}
${parameter^^pattern}
${parameter,pattern}
${parameter,,pattern}
       Case  modification.   This  expansion modifies the case of alphabetic characters in parameter.  The pattern is expanded to
       produce a pattern just as in pathname expansion.  The ^ operator converts lowercase letters matching pattern to uppercase;
       the  , operator converts matching uppercase letters to lowercase.  The ^^ and ,, expansions convert each matched character
       in the expanded value; the ^ and , expansions match and convert only the first character in the expanded value..  If  pat‐
       tern  is  omitted,  it  is treated like a ?, which matches every character.  if parameter is @ or *, the case modification
       operation is applied to each positional parameter in turn, and the expansion is the resultant list.  If  parameter  is  an
       array  variable  subscripted  with @ or *, the case modification operation is applied to each member of the array in turn,
       and the expansion is the resultant list.

 

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LEARN ABOUT DEBIAN

gpg-zip

GPG-ZIP(1)						      General Commands Manual							GPG-ZIP(1)

NAME

       gpg-zip - encrypt or sign files into an archive

SYNOPSIS

       gpg-zip [OPTIONS] filename1 [filename2, ...]  directory1 [directory2, ...]

DESCRIPTION

       This manual page documents briefly the gpg-zip command.

       gpg-zip encrypts or signs files into an archive. It is an gpg-ized tar using the same format as PGP's PGP Zip.

OPTIONS

       -e, --encrypt
	      Encrypt data. This option may be combined with --symmetric (for output that may be decrypted via a secret key or a passphrase).

       -d, --decrypt
	      Decrypt data.

       -c, --symmetric
	      Encrypt  with  a	symmetric  cipher  using  a  passphrase.   The	default symmetric cipher used is CAST5, but may be chosen with the
	      --cipher-algo option to gpg(1).

       -s, --sign
	      Make a signature. See gpg(1).

       -r, --recipient USER
	      Encrypt for user id USER. See gpg(1).

       -u, --local-user USER
	      Use USER as the key to sign with. See gpg(1).

       --list-archive
	      List the contents of the specified archive.

       -o, --output FILE"
	      Write output to specified file FILE.

       --gpg GPG
	      Use the specified command instead of gpg.

       --gpg-args ARGS
	      Pass the specified options to gpg(1).

       --tar TAR
	      Use the specified command instead of tar.

       --tar-args ARGS
	      Pass the specified options to tar(1).

       -h, --help
	      Output a short usage information.

       --version
	      Output the program version.

DIAGNOSTICS

       The program returns 0 if everything was fine, 1 otherwise.

EXAMPLES

       Encrypt the contents of directory mydocs for user Bob to file test1:

	      gpg-zip --encrypt --output test1 --gpg-args  -r Bob"" mydocs

       List the contents of archive test1:

	      gpg-zip --list-archive test1

SEE ALSO

       gpg(1), tar(1)

AUTHOR

       Copyright (C) 2005 Free Software Foundation, Inc. Please report bugs to <bug-gnupg@gnu.org>.

       This manpage was written by Colin Tuckley <colin@tuckley.org> and Daniel Leidert <daniel.leidert@wgdd.de> for the Debian distribution  (but
       may be used by others).

								   November 2006							GPG-ZIP(1)
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