fmlcut(1F) UNIX System V fmlcut(1F)
NAME
fmlcut - cut out selected fields of each line of a file
SYNOPSIS
fmlcut -clist [file . . .]
fmlcut -flist [-dchar] [-s] [file . . .]
DESCRIPTION
The fmlcut function cuts out columns from a table or fields from each
line in file; in database parlance, it implements the projection of a
relation. fmlcut can be used as a filter; if file is not specified or is
-, the standard input is read. list specifies the fields to be selected.
Fields can be fixed length (character positions) or variable length
(separated by a field delimiter character), depending on whether -c or -f
is specified.
Note that either the -c or the -f option must be specified.
The meanings of the options are:
list A comma-separated list of integer field numbers (in increasing
order), with optional - to indicate ranges For example: 1,4,7;
1-3,8; -5,10 (short for 1-5,10); or 3- (short for third through
last field).
-clist If -c is specified, list specifies character positions (for
example, -c1-72 would pass the first 72 characters of each
line). Note that no space intervenes between -c and list.
-flist If -f is specified, list is a list of fields assumed to be
separated in the file by the default delimiter character, TAB,
or by char if the -d option is specified. For example, -f1,7
copies the first and seventh field only. Lines with no
delimiter characters are passed through intact (useful for table
subheadings), unless -s is specified. Note that no space
intervenes between -f and list. The following options can be
used if you have specified -f.
-dchar
If -d is specified, char is the field delimiter. Space or
other characters with special meaning to FMLI must be quoted.
Note that no space intervenes between -d and char. The default
field delimiter is TAB.
-s Suppresses lines with no delimiter characters. If -s is not
specified, lines with no delimiters will be passed through
untouched.
EXAMPLES
fmlcut -d: -f1,5 /etc/passwd gets login IDs and names
`who am i | fmlcut -f1 -d" "` gets the current login name
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fmlcut(1F) UNIX System V fmlcut(1F)
DIAGNOSTICS
fmlcut returns the following exit values:
0 when the selected field is successfully cut out
2 on syntax errors
The following error messages may be displayed on the FMLI message line:
ERROR: line too long
A line has more than 1023 characters or fields, or there is no
new-line character.
ERROR: bad list for c/f option
Missing -c or -f option or incorrectly specified list. No
error occurs if a line has fewer fields than the list calls
for.
ERROR: no fields
The list is empty.
ERROR: no delimiter
Missing char on -d option.
NOTES
fmlcut cannot correctly process lines longer than 1023 characters, or
lines with no newline character.
SEE ALSO
fmlgrep(1F)
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