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need to read 3° character from a text file
Post 79171 by Unbeliever on Tuesday 26th of July 2005 04:50:22 AM
07-26-2005
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Hi,
Maybe this iscorrect forum for my question...
I should read one character at a fixed position from each line of the file. So how ??? should be substituted in the code below:
while read line ; do
single_char=`???`
echo "$single_char"
done < $input_file
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performing this code to read from file and print each character in separate line
works well with ASCII encoded text
void
preprocess_file (FILE *fp)
{
int cc;
for (;;)
{ cc = getc (fp);
if (cc == EOF)
break;
printf ("%c\n", cc);
}
}
int
main(int... (1 Reply)
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LEARN ABOUT SUNOS
info
INFO(1) User Commands INFO(1) NAME
info - read Info documents SYNOPSIS
info [OPTION]... [MENU-ITEM...] DESCRIPTION
Read documentation in Info format. Frequently-used options: -a, --all use all matching manuals -k, --apropos=STRING look up STRING in all indices of all manuals -d, --directory=DIR add DIR to INFOPATH -f, --file=MANUAL specify Info manual to visit -h, --help display this help and exit --index-search=STRING go to node pointed by index entry STRING -n, --node=NODENAME specify nodes in first visited Info file -o, --output=FILE output selected nodes to FILE -O, --show-options, --usage go to command-line options node --subnodes recursively output menu items -v, --variable VAR=VALUE assign VALUE to Info variable VAR --version display version information and exit -w, --where, --location print physical location of Info file The first non-option argument, if present, is the menu entry to start from; it is searched for in all 'dir' files along INFOPATH. If it is not present, info merges all 'dir' files and shows the result. Any remaining arguments are treated as the names of menu items relative to the initial node visited. For a summary of key bindings, type H within Info. EXAMPLES
info show top-level dir menu info info-stnd show the manual for this Info program info emacs start at emacs node from top-level dir info emacs buffers select buffers menu entry in emacs manual info emacs -n Files start at Files node within emacs manual info '(emacs)Files' alternative way to start at Files node info --show-options emacs start at node with emacs' command line options info --subnodes -o out.txt emacs dump entire emacs manual to out.txt info -f ./foo.info show file ./foo.info, not searching dir REPORTING BUGS
Email bug reports to bug-texinfo@gnu.org, general questions and discussion to help-texinfo@gnu.org. Texinfo home page: http://www.gnu.org/software/texinfo/ COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for info is provided by the texinfo-doc-nonfree package as a Texinfo manual. If this package is installed at your site, the command info info should give you access to the complete manual. (Or, if you have Emacs, M-x info will lead to the manual.) info 6.5 February 2018 INFO(1)