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⇤ ← Revision 1 as of 2007-05-02 22:51:12
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| The fastest way, not requiring external programs (but usable only with ["BASH"] and KornShell): | The fastest way, not requiring external programs (but usable only with [[BASH]] and KornShell): |
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| (for a BSD/GNU version of {{{expr}}}. Do not use this, because it is not ["POSIX"]). | (for a BSD/GNU version of {{{expr}}}. Do not use this, because it is not [[POSIX]]). |
Is there a function to return the length of a string?
The fastest way, not requiring external programs (but usable only with BASH and KornShell):
${#varname}or
expr "$varname" : '.*'
(expr prints the number of characters matching the pattern .*, which is the length of the string)
or
expr length "$varname"
(for a BSD/GNU version of expr. Do not use this, because it is not POSIX).