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Full Discussion: Cant check empty string
Top Forums Shell Programming and Scripting Cant check empty string Post 302924090 by RudiC on Thursday 6th of November 2014 06:33:49 AM
Old 11-06-2014
Well understood, but what are you using to fill it with in your code snippet?
 

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GNULIB-TOOL(1)						      GNU Portability Library						    GNULIB-TOOL(1)

NAME
gnulib-tool - program for authors or maintainers which want to import modules from gnulib into their packages. SYNOPSIS
gnulib-tool --list gnulib-tool --import [module1 ... moduleN] gnulib-tool --update gnulib-tool --create-testdir --dir=directory module1 ... moduleN gnulib-tool --create-megatestdir --dir=directory [module1 ... moduleN] gnulib-tool --test --dir=directory module1 ... moduleN gnulib-tool --megatest --dir=directory [module1 ... moduleN] gnulib-tool --extract-description module gnulib-tool --extract-filelist module gnulib-tool --extract-dependencies module gnulib-tool --extract-autoconf-snippet module gnulib-tool --extract-automake-snippet module gnulib-tool --extract-include-directive module gnulib-tool --extract-license module gnulib-tool --extract-maintainer module gnulib-tool --extract-tests-module module DESCRIPTION
The GNU portability library is a macro system and C declarations and definitions for commonly-used API elements and abstracted system behaviors. It can be used to improve portability and other functionality in your programs. OPTIONS
Operation modes: --list print the available module names. --import import the given modules into the current package; if no modules are specified, update the current package from the current gnulib. --update update the current package, restore files omitted from CVS. --create-testdir create a scratch package with the given modules. --create-megatestdir create a mega scratch package with the given modules one by one and all together. --test test the combination of the given modules (recommended to use CC="gcc -Wall" here). --megatest test the given modules one by one and all together (recommended to use CC="gcc -Wall" here). --extract-description extract the description. --extract-filelist extract the list of files. --extract-dependencies extract the dependencies. --extract-autoconf-snippet extract the snippet for configure.ac. --extract-automake-snippet extract the snippet for lib/Makefile.am. --extract-include-directive extract the #include directive. --extract-license report the license terms of the source files under lib/. --extract-maintainer report the maintainer(s) inside gnulib. --extract-tests-module report the unit test module, if it exists. Options: --dir=DIRECTORY specify the target directory. For --import, this specifies where your configure.ac can be found. Defaults to current directory. --lib=LIBRARY Specify the library name. Defaults to 'libgnu'. --source-base=DIRECTORY Directory relative --dir where source code is placed (default "lib"), for --import. --m4-base=DIRECTORY Directory relative --dir where *.m4 macros are placed (default "m4"), for --import. --tests-base=DIRECTORY Directory relative --dir where unit tests are placed (default "tests"), for --import. --aux-dir=DIRECTORY Directory relative --dir where auxiliary build tools are placed (default "build-aux"). --with-tests Include unit tests for the included modules. --avoid=MODULE Avoid including the given MODULE. Useful if you have code that provides equivalent functionality. This option can be repeated. --lgpl Abort if modules aren't available under the LGPL. Also modify license template from GPL to LGPL. --libtool Use libtool rules, for --import. --macro-prefix=PREFIX Specify the prefix of the macros 'gl_EARLY' and 'gl_INIT'. Default is 'gl'. --no-changelog don't update or create ChangeLog files. --dry-run For --import, only print what would have been done. -s, --symbolic, --symlink Make symbolic links instead of copying files. -h, --help Show summary of options. BUGS
Report bugs to <bug-gnulib@gnu.org>. SEE ALSO
check-module(1). AUTHOR
gnulib was written by the Free Software Foundation and others (sources of various origins). This manual page was written by Daniel Baumann <daniel@debian.org>, for the Debian project (but may be used by others). 0.0.20060601 2006-06-01 GNULIB-TOOL(1)
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