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Full Discussion: Cut or awk in reverse
Top Forums Shell Programming and Scripting Cut or awk in reverse Post 302521531 by cbo0485 on Wednesday 11th of May 2011 01:30:27 PM
Old 05-11-2011
Cut or awk in reverse
I may be making this too hard on myself, but I'm trying to find a way that I can use a cut or awk string to always remove the last two delimited fields of a string.


Say I have

Code:
PackageName-U939393-8.2.3.4.s390x.rpm

But the s390x could be any string w/o periods in it, x8664 for example, etc... I need to use cut or awk to remove the .s390x.rpm piece.

I was using '.' as the delimiter, but the number of '.' will vary.
 

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LEARN ABOUT V7

cut

CUT(1)                                                             User Commands                                                            CUT(1)

NAME

       cut - remove sections from each line of files

SYNOPSIS

       cut OPTION... [FILE]...

DESCRIPTION

       Print selected parts of lines from each FILE to standard output.

       With no FILE, or when FILE is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -b, --bytes=LIST
              select only these bytes

       -c, --characters=LIST
              select only these characters

       -d, --delimiter=DELIM
              use DELIM instead of TAB for field delimiter

       -f, --fields=LIST
              select only these fields;  also print any line that contains no delimiter character, unless the -s option is specified

       -n     (ignored)

       --complement
              complement the set of selected bytes, characters or fields

       -s, --only-delimited
              do not print lines not containing delimiters

       --output-delimiter=STRING
              use STRING as the output delimiter the default is to use the input delimiter

       -z, --zero-terminated
              line delimiter is NUL, not newline

       --help display this help and exit

       --version
              output version information and exit

       Use  one,  and only one of -b, -c or -f.  Each LIST is made up of one range, or many ranges separated by commas.  Selected input is written
       in the same order that it is read, and is written exactly once.  Each range is one of:

       N      N'th byte, character or field, counted from 1

       N-     from N'th byte, character or field, to end of line

       N-M    from N'th to M'th (included) byte, character or field

       -M     from first to M'th (included) byte, character or field

AUTHOR

       Written by David M. Ihnat, David MacKenzie, and Jim Meyering.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report cut translation bugs to <http://translationproject.org/team/>

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

       Full documentation at: <http://www.gnu.org/software/coreutils/cut>
       or available locally via: info '(coreutils) cut invocation'

GNU coreutils 8.28                                                 January 2018                                                             CUT(1)
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