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Full Discussion: Need to cut filename in LINUX ksh
Top Forums Shell Programming and Scripting Need to cut filename in LINUX ksh Post 302323737 by ghostdog74 on Monday 8th of June 2009 09:38:57 PM
Old 06-08-2009
the last "_" underscore is before the extension. therefore you can use % which means "shortest match from the back"
Code:
${zip_file%_*}

please read again Advance Bash guide (google) for details on string manipulation
 

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LEARN ABOUT CENTOS

zip_fopen

ZIP_FOPEN(3)						     Library Functions Manual						      ZIP_FOPEN(3)

NAME

       zip_fopen , - .Nm zip_fopen_index open file in zip archive for reading

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       struct zip_file * zip_fopen(struct zip *archive, const char *fname, int flags);

       struct zip_file * zip_fopen_index(struct zip *archive, zip_uint64_t index, int flags);

DESCRIPTION

       The zip_fopen function opens the file name fname in archive.  The flags argument specifies how the name lookup should be done, according to
       the values are described in zip_name_locate(3).	Also, the following values may be or'ed to it.

	      ZIP_FL_COMPRESSED  Read the compressed data.  Otherwise the data is uncompressed by zip_fread.

	      ZIP_FL_UNCHANGED	 Read the original data from the zip archive, ignoring any changes made to the file.

       The zip_fopen_index function opens the file at position index.

       If encrypted data is encountered, the functions call zip_fopen_encrypted(3) or zip_fopen_index_encrypted(3) respectively, using the default
       password set with zip_set_default_password(3).

RETURN VALUES

       Upon successful completion, a

       struct zip_file pointer is returned.  Otherwise, NULL is returned and the error code in archive is set to indicate the error.

ERRORS

	      [ZIP_ER_CHANGED]
		  The file data has been changed.

	      [ZIP_ER_COMPNOTSUPP]
		  The compression method used is not supported.

	      [ZIP_ER_ENCRNOTSUPP]
		  The encryption method used is not supported.

	      [ZIP_ER_MEMORY]
		  Required memory could not be allocated.

	      [ZIP_ER_READ]
		  A file read error occurred.

	      [ZIP_ER_SEEK]
		  A file seek error occurred.

	      [ZIP_ER_ZLIB]
		  Initializing the zlib stream failed.

       The function zip_fopen may also fail and set for any of the errors specified for the routine zip_name_locate(3).

       The function zip_fopen_index may also fail with ZIP_ER_INVAL if index is invalid.

SEE ALSO

       libzip(3), zip_fclose(3), zip_fread(3), zip_get_num_entries(3), zip_name_locate(3), zip_set_default_password(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>

NiH								 February 14, 2011						      ZIP_FOPEN(3)
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