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cut (1)
  • >> cut (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
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  • cut (1) ( Русские man: Команды и прикладные программы пользовательского уровня )
  • cut (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  • cut (1) ( POSIX man: Команды и прикладные программы пользовательского уровня )
  •  

    NAME

    cut - cut out selected fields of each line of a file
     
    

    SYNOPSIS

    cut -b list [-n] [file]...
    

    cut -c list [file]...
    

    cut -f list [-d delim] [-s] [file]...
    

     

    DESCRIPTION

    Use the cut utility to cut out columns from a table or fields from each line of a file; in data base parlance, it implements the projection of a relation. The fields as specified by list can be fixed length, that is, character positions as on a punched card (-c option) or the length can vary from line to line and be marked with a field delimiter character like TAB (-f option). cut can be used as a filter.

    Either the -b, -c, or -f option must be specified.

    Use grep(1) to make horizontal ``cuts'' (by context) through a file, or paste(1) to put files together column-wise (that is, horizontally). To reorder columns in a table, use cut and paste.  

    OPTIONS

    The following options are supported:

    list

    A comma-separated or blank-character-separated list of integer field numbers (in increasing order), with optional - to indicate ranges (for instance, 1,4,7; 1-3,8; -5,10 (short for 1-5,10); or 3- (short for third through last field)).

    -b list

    The list following -b specifies byte positions (for instance, -b1-72 would pass the first 72 bytes of each line). When -b and -n are used together, list is adjusted so that no multi-byte character is split.

    -c list

    The list following -c specifies character positions (for instance, -c1-72 would pass the first 72 characters of each line).

    -d delim

    The character following -d is the field delimiter (-f option only). Default is tab. Space or other characters with special meaning to the shell must be quoted. delim can be a multi-byte character.

    -f list

    The list following -f is a list of fields assumed to be separated in the file by a delimiter character (see -d ); for instance, -f1,7 copies the first and seventh field only. Lines with no field delimiters will be passed through intact (useful for table subheadings), unless -s is specified.

    -n

    Do not split characters. When -b list and -n are used together, list is adjusted so that no multi-byte character is split.

    -s

    Suppresses lines with no delimiter characters in case of -f option. Unless specified, lines with no delimiters will be passed through untouched.

     

    OPERANDS

    The following operands are supported:

    file

    A path name of an input file. If no file operands are specified, or if a file operand is -, the standard input will be used.

     

    USAGE

    See largefile(5) for the description of the behavior of cut when encountering files greater than or equal to 2 Gbyte (2^31 bytes).  

    EXAMPLES

    Example 1 Mapping user IDs

    A mapping of user IDs to names follows:

    example% cut -d: -f1,5 /etc/passwd
    

    Example 2 Setting current login name

    To set name to current login name:

    example$ name=`who am i | cut -f1 -d' '`
    

     

    ENVIRONMENT VARIABLES

    See environ(5) for descriptions of the following environment variables that affect the execution of cut: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.  

    EXIT STATUS

    The following exit values are returned:

    0

    All input files were output successfully.

    >0

    An error occurred.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    AvailabilitySUNWcsu

    CSI

    Interface Stability

     

    SEE ALSO

    grep(1), paste(1), attributes(5), environ(5), largefile(5), standards(5)  

    DIAGNOSTICS

    cut: -n may only be used with -b

    cut: -d may only be used with -f

    cut: -s may only be used with -f

    cut: cannot open <file>

    Either file cannot be read or does not exist. If multiple files are present, processing continues.

    cut: no delimiter specified

    Missing delim on -d option.

    cut: invalid delimiter

    cut: no list specified

    Missing list on -b, -c, or -f option.

    cut: invalid range specifier

    cut: too many ranges specified

    cut: range must be increasing

    cut: invalid character in range

    cut: internal error processing input

    cut: invalid multibyte character

    cut: unable to allocate enough memory


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    OPERANDS
    USAGE
    EXAMPLES
    ENVIRONMENT VARIABLES
    EXIT STATUS
    ATTRIBUTES
    SEE ALSO
    DIAGNOSTICS


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