If you have the list of columns to be extracted, just give them to cut in a comma-separated list. If there are several adjacent fields, specify them as a range in the list. For example:
will extract fields 2, 5, 10 through 20, and 1,000,025 from the file named file.
Hi All!!
I have a large file containing millions of record. My purpose is to extract 7 characters immediately after text '19' from this file (including text '19') and save the result in new file.
So, my OUTPUT would be as under :
191234561
194567894
192789005
198839408
and so on.....
... (7 Replies)
Hello,
I have got one file with more than 120+ million records(35 GB in size). I have to extract some relevant data from file based on some parameter and generate other output file.
What will be the besat and fastest way to extract the ne file.
sample file format :--... (2 Replies)
Hi All,
I am trying to extract data from a large text file , I want to extract lines which contains a five digit number followed by a hyphen , like
12345- , i tried with egrep ,eg : egrep "+" text.txt
but which returns all the lines which contains any number of digits followed by hyhen ,... (19 Replies)
I have done a couple of searches on this and have found many threads but I don't think I've found one that is useful to me - probably because I have very basic comprehension of perl and beginners shell so trying to manipulate a script already posted maybe beyond my capabilities....
Anyway - I... (26 Replies)
Hi,
I have a data file that contains 61 columns. I want to delete all the columns except columns, 3,6 and 8. The columns are tab de-limited. How would I achieve this on the terminal?
Thanks (2 Replies)
Hi i have a php script that works 100% however i don't want this to run on php because of server limits etc. Ideally if i could convert this simple php script to a shell script i can set it up to run on a cron. My mac server has curl on it. So i am assuming i should be using this to download the... (3 Replies)
Hi everyone. I have a file with ~500 columns and I would like to perform a simple calculation on every two columns. The file looks like this:
$cat input
id A B C D E F.....X
1 2 4 2 3 4 1 n
2 4 6 4 6 4 5 n
3 4 7 5 2 2 3 n
4 ... (5 Replies)
Kindly help merging information from two files with the following data structure.
I want to match for the CHR-SNP in Foo and get the columns that match from CHROM-rsID
Fields 1 & 2 of foo may have duplicates, however, a joint key of Fields $1$2$3$4 is unique.
Also would be helpful to clean up... (4 Replies)
Hi All!!
I have a large file containing millions of records. My purpose is to extract 8 characters immediately from the given file.
222222222|ZRF|2008.pdf|2008|01/29/2009|001|B|C|C
222222222|ZRF|2009.pdf|2009|01/29/2010|001|B|C|C
222222222|ZRF|2010.pdf|2010|01/29/2011|001|B|C|C... (5 Replies)
Hi All,
I have records in unix file like below. In this file, we have empty fields from 4th Column to 22nd Column. I have some 200000 records in a file. I want to extract records only which have empty fields from 4th field to 22nd filed. This file is comma separated file. what is the unix... (2 Replies)
Discussion started by: rakeshp
2 Replies
LEARN ABOUT ULTRIX
cut
cut(1) General Commands Manual cut(1)Name
cut - cut out selected fields of each line of a file
Syntax
cut -clist [file1 file2...]
cut -flist [-dchar] [-s] [file1 file2...]
Description
Use the command to cut out columns from a table or fields from each line of a file. 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 delim-
iter character like tab (-f option). The command can be used as a filter. If no files are given, the standard input is used.
Use to make horizontal ``cuts'' (by context) through a file, or to put files together in columns. To reorder columns in a table, use and
Options
list Specifies ranges that must be a comma-separated list of integer field numbers in increasing order. With optional - indicates
ranges as in the -o option of nroff/troff for page 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 Specifies character positions to be cut out. For example, -c1-72 would pass the first 72 characters of each line.
-flist Specifies the fields to be cut out. For example, -f1,7 copies the first and seventh field only. Lines with no field delim-
iters are passed through intact (useful for table subheadings), unless -s is specified.
-dchar Uses the specified character as the field delimiter. Default is tab. Space or other characters with special meaning to the
shell must be quoted. The -d option is used only in combination with the -f option, according to XPG3 and SVID2/SVID3.
-s Suppresses lines with no delimiter characters. Unless specified, lines with no delimiters are passed through untouched.
Either the -c or -f option must be specified.
Examples
Mapping of user IDs to names:
cut -d: -f1,5 /etc/passwd
To set name to the current login name for the csh shell:
set name=`who am i | cut -f1 -d" "`
To set name to the current login name for the sh, sh5, and ksh shells:
name=`who am i | cut -f1 -d" "`
Diagnostics
"line too long" A line can have no more than 511 characters or fields.
"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.
"no fields" The list is empty.
See Alsogrep(1), paste(1)cut(1)