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Top Forums UNIX for Dummies Questions & Answers checking wether an input is using letters of the alphabet Post 302338264 by mrtiller on Monday 27th of July 2009 11:27:12 AM
Old 07-27-2009

while read LINE
        case "$LINE" in
        [A-Za-z]) echo "alpha";;
        *) echo "not alpha";;

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BASE64(1)							   User Commands							 BASE64(1)

base64 - base64 encode/decode data and print to standard output SYNOPSIS
Base64 encode or decode FILE, or standard input, to standard output. -w, --wrap=COLS Wrap encoded lines after COLS character (default 76). Use 0 to disable line wrapping. -d, --decode Decode data. -i, --ignore-garbage When decoding, ignore non-alphabet characters. --help Display this help and exit. --version Output version information and exit. With no FILE, or when FILE is -, read standard input. The data are encoded as described for the base64 alphabet in RFC 3548. Decoding require compliant input by default, use --ignore-garbage to attempt to recover from non-alphabet characters (such as newlines) in the encoded stream. AUTHOR
Written by Simon Josefsson. REPORTING BUGS
Report bugs to <>. COPYRIGHT
Copyright (C) 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <>. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for base64 is maintained as a Texinfo manual. If the info and base64 programs are properly installed at your site, the command info base64 should give you access to the complete manual. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+--------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+--------------------+ |Availability | SUNWgnu-coreutils | +--------------------+--------------------+ |Interface Stability | Uncommitted | +--------------------+--------------------+ NOTES
Source for GNU coreutils is available on base64 6.7 December 2006 BASE64(1)

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