Ux2dos script Post: 302989505

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Operating Systems HP-UX Ux2dos script Post 302989505 by Peasant on Friday 13th of January 2017 10:27:02 AM

01-13-2017

Moderator

i'm willing to provide a small script for you this time, once and explain it as much as i can.

Hopefully we shall see in the future will user lcclaj0 ask simple question again without any tries, but lets assume he is new in scripting and is looking for a simple example.

Code:

INPUTDIR=/directorywithunixfiles
OUTPUTDIR=/directoryforoutput
[ -d $OUTPUTDIR ] || exit 1 # script will exit if $OUTPUTDIR is not a directory.
cd $INPUTDIR || exit 1 # script will exit if it's unable to change directory to $INPUTDIR, additionally it will print the cd command error on stderr
for i in * # for everything in $INPUTDIR 
do
   if [ -f "$i" ]; then # if it's a file use ux2dos utility on it, otherwise silently ignore.
   ux2dos "$i" > "${OUTPUTDIR}"/"$i"
   fi
done
cd - # return to directory the script has been issued from.

Directory /directoryforoutput (destination) will contain converted files with /directorywithunix (source) will contain original files, uneffected by operation (exception being modifed atime -access time, if used on filesystem, by default vxfs - yes.)

This is sample shell script with basic error handling.

Shell commands and constructs used :

1. Variable declaration (directories used INPUTDIR OUTPUTDIR)
2. Conditional operator ( || )
3. Test constructs ([ .. ]) # man test
4. for loop to iterate over the directory contents
5. ux2dos utility to convert format.

Script will not go into subdirectories or process files with dots in names e.g .config

Hope that helps.
Best regards
Peasant.

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cr

cr(1)							      General Commands Manual							     cr(1)

NAME

       cr - converts text files between nix EOL and dos EOL

SYNOPSIS

       cr  - | +  <input file> <output file>

DESCRIPTION

       Text  files,  such  as tle files, that come from a dos source usualy have the ^M symbol at the end of every line. Cr converts files between
       the dos newline format and the normal *nix newline format by stripping the ^M to convert dos to *nix, using the '-' option, or adding ^M to
       a *nix file to create the proper dos file when the '+' option is used.

       Although this extra character is not often a problem, programs like seesat5, which are data driven will encounter parsing problems when the
       extra character is present. It is these problems that cr is intended to repair.

   Options
       - | +  One or the other of these options is required. The '-' option is used to remove ^M from all newlines found in the dos file. The  '+'
	      option is used to add ^M to every newline found in a *nix file.

       input file
	      Fully delineated path to the input file. As this program is used in the dos environment as well, standard input is not used.

       output file
	      Fully delineated path to the output file. As this program is used in the dos environment as well, standart output is not used.

SEE ALSO

       seesat5(1), seesat5(7), SEESAT5.INI(5), tle(5)

BUGS

       Cr  is  not an inteligent program. It methodicaly replaces/removes the offending character when it finds it in the correct context. Newline
       sequences found in contexts other than 'newline' will be replaced/removed just like those found in the proper  context.	Passing  a  binary
       file through cr is not advised, for this reason. Send all inqueries to Dale Scheetz <dwarf@polaris.net>.

Debian Linux							    2 April 96								     cr(1)