Recently I came across file conversion issue in UNIX system.
I have written a shell script in windows (i.e. via eclipse) once I completed,
copied to designation server and I tried to run the same file.
But, surprisingly I got bad descriptor errors. I don’t know
what the error was. Developed script was
fine no issues with syntax and logics. Later when I looked the
contents of the file; I found out some of the system specific characters are in
same file.
To overcome this kind file conversion issue, there is a UNIX
command called “dos2unix” which is converting
your dos/mac written file into UNIX format by removing those system characters.
Detailed explanation of "dos2unix" command given below;
dos2unix - DOS/MAC to UNIX text file format converter
SYNOPSYS
dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]
Options:
[-hkqV] [--help] [--keepdate] [--quiet] [--version]
DESCRIPTION
This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.
OPTIONS
The following options are available:
-h --help
Print online help.
-k --keepdate
Keep the date stamp of output file same as input file.
-q --quiet
Quiet mode. Suppress all warning and messages.
-V --version
Prints version information.
-c --convmode convmode
Sets conversion mode. Where convmode is one of: ASCII, 7bit, ISO, Mac with ASCII being the default. Simulates dos2unix under SunOS.
-o --oldfile file ...
Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.
-n --newfile infile outfile ...
New file mode. Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be used or
you WILL lost your files.
Example :
dos2unix filename.sh
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