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Full Discussion: traversing a string
Top Forums Shell Programming and Scripting traversing a string Post 302681093 by alister on Thursday 2nd of August 2012 05:47:07 PM
Old 08-02-2012
Some shells support slicing a variable's value. If yours does not, you can always print one character per line, grep and count.

An example for the vowel count:
Code:
printf '%s\n' "$word" | fold -bw1 | grep -c '[aeiou]'

If you specify which shell you're using, you may get more specific suggestions.

By the way, that's C++, not C (a nitpick, I know Smilie).

Regards,
Alister
 

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ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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