I recently had to remove a number of columns from a sorted copy of a file, but couldn't get the cut command to take fields out, just what to keep. This is the only thing I could find as an example, but could it be simplified?
Could this be reduced to just one cut (or some other) command? The above just took out one character so everything would appear on one line, but I had to take out much more than that.
I am trying to cut the first 10 characters from a file only if the file has 'xyz' in field 185-188.
I tried this
cat filename | cut -c1-10
but this gives me all the records regardless of what is in field 185-188.
Is this doable ?
Thanks in advance for responses. (2 Replies)
Dear all
I have a large file w. ~ 10 million lines.
The first two cols have matching partners.
For example:
A A
A B
B B
or
A A
B A
B B
The matches may be separated by an unknown number of lines.
My intention is to group them and add a "group" value in the last col.
For... (12 Replies)
Hi
I have a requirement wherein the file is comma separated. Each records seems to have different number of columns, how I can detect like a row index wise, how many columns are present ?
Thanks in advance. (2 Replies)
Hi,
I am looking for a method to get column13 to column 50 data from the 1st line of a multiline reord. The records are stored in a large file and are separated by newline. sample format is
(data in red is to be extracted)
<header>
A001dfhskhfkdsh hajfhksdhfjh... (3 Replies)
I'm working with an extremely outdated and old system at work. We do not have ncurses, but we do have curses. I need to make a user interface for users connecting with xterm. One issue I've encountered is if the user resizes the window, I'd like to provide functionality to redraw the screen with... (4 Replies)
Hi Guys,
Hope you are doing well out there.
I have to format the output of a script.
Current output is auktltbr.dc-dublin.de:4322 ICCIR2Test13-PB-01 active
auktltbr.dc-dublin.de:8322 ICCIR2Test13-SB-02 active
auktlttr.dc-dublin.de:4422 ICCIR2Test24-CB-02 active... (10 Replies)
Dear all, could you please help me with awk please?
I have such input:
Input:
a d
b e
c f
The number of lines is unknown before reading the file.
I need to print possible combination between the two columns like this:
Output:
a d
b d
c d
a e
b e
c e
a f (2 Replies)
this is Korn shell unix.
The scenario is I have a pipe delimited text file which needs to be customized. say for example,I have a pipe delimited text file with 15 columns(| delimited) and 200 rows. currently the 11th and 12th column has null values for all the records(there are other null columns... (4 Replies)
Hello,
I want to compute the bitwise number of matches in pairwise fashion for all columns. The problem is I have 18486955 rows and 750 columns. Please help with code, I believe this will take a lot of time, is there a way of tracking progress?
Input
Org1 Org2 Org3
A A T
A ... (9 Replies)
I have two files and would need to filter out records based on certain criteria, these column are of variable lengths, but the lengths are uniform throughout all the records of the file. I have shown a sample of three records below. Line 1-9 is the item number "0227546_1" in the case of the first... (15 Replies)
Discussion started by: MIA651
15 Replies
LEARN ABOUT FREEBSD
cut
CUT(1) BSD General Commands Manual CUT(1)NAME
cut -- cut out selected portions of each line of a file
SYNOPSIS
cut -b list [-n] [file ...]
cut -c list [file ...]
cut -f list [-w | -d delim] [-s] [file ...]
DESCRIPTION
The cut utility cuts out selected portions of each line (as specified by list) from each file and writes them to the standard output. If no
file arguments are specified, or a file argument is a single dash ('-'), cut reads from the standard input. The items specified by list can
be in terms of column position or in terms of fields delimited by a special character. Column and field numbering start from 1.
The list option argument is a comma or whitespace separated set of increasing numbers and/or number ranges. Number ranges consist of a num-
ber, a dash ('-'), and a second number and select the columns or fields from the first number to the second, inclusive. Numbers or number
ranges may be preceded by a dash, which selects all columns or fields from 1 to the last number. Numbers or number ranges may be followed by
a dash, which selects all columns or fields from the last number to the end of the line. Numbers and number ranges may be repeated, overlap-
ping, and in any order. It is not an error to select columns or fields not present in the input line.
The options are as follows:
-b list
The list specifies byte positions.
-c list
The list specifies character positions.
-d delim
Use delim as the field delimiter character instead of the tab character.
-f list
The list specifies fields, separated in the input by the field delimiter character (see the -d option). Output fields are separated
by a single occurrence of the field delimiter character.
-n Do not split multi-byte characters. Characters will only be output if at least one byte is selected, and, after a prefix of zero or
more unselected bytes, the rest of the bytes that form the character are selected.
-s Suppress lines with no field delimiter characters. Unless specified, lines with no delimiters are passed through unmodified.
-w Use whitespace (spaces and tabs) as the delimiter. Consecutive spaces and tabs count as one single field separator.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of cut as described in environ(7).
EXIT STATUS
The cut utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
Extract users' login names and shells from the system passwd(5) file as ``name:shell'' pairs:
cut -d : -f 1,7 /etc/passwd
Show the names and login times of the currently logged in users:
who | cut -c 1-16,26-38
SEE ALSO colrm(1), paste(1)STANDARDS
The cut utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A cut command appeared in AT&T System III UNIX.
BSD August 8, 2012 BSD