Sponsored Content
Top Forums Shell Programming and Scripting Removing blank columns from a file Post 302226319 by era on Monday 18th of August 2008 05:16:00 PM
Old 08-18-2008
You can use cut -c to specify the character columns to keep, but cut can't add commas without help. A regular expression matching the columns you want to keep might also be an option.

You can use code tags to post snippets with their whitespace preserved.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Removing blank spaces from a file?

Guys, I need some help... how can I remove the blank spaces between the lines below? (between the date and the hour fields) 21/05/07 00:05:00 99 21/05/07 00:10:01 99 21/05/07 00:15:00 99 21/05/07 00:20:00 99 21/05/07 00:25:00 99 I want to make the file... (4 Replies)
Discussion started by: dfs
4 Replies

2. UNIX for Dummies Questions & Answers

Removing blank lines in a file

Hi I have a text file that has blank lines at different places. How to remove all the blank lines in a file? Thanks Ashok (3 Replies)
Discussion started by: ashok.k
3 Replies

3. Shell Programming and Scripting

Extract columns from a file if the name dont exist put blank

Hi, I am very new to Unix script. Suppose i have a file with column header: NAME1 NAME2 Address Tel And I always need to make a file with column header: ID NAME1 NAME2 EMail Address Tel For the columns that do not exist in the file, I would still like to make a column with blank. ... (11 Replies)
Discussion started by: nightrider
11 Replies

4. UNIX for Dummies Questions & Answers

Removing columns from a text file that do not have any values in second and third columns

I have a text file that has three columns. But at the end of the text file, there are trailing lines that have missing second and third columns: 4 0.04972604 KLHL28 4 0.0497332 CSTB 4 0.04979822 AIF1 4 0.04983331 DECR2 4 0.04990344 KATNB1 4 4 4 4 How can I remove the trailing... (3 Replies)
Discussion started by: evelibertine
3 Replies

5. Shell Programming and Scripting

Removing blank space in file

TT0000013101257 | JCJMMUJMMUB018 ... (0 Replies)
Discussion started by: sususa
0 Replies

6. Shell Programming and Scripting

Removing blank lines from a file

Hi All, How do i remove continuos blank lines from a file. I have a file with data: abc; def; ghi; jkl; mno; pqr; In the above file, there are two blank lines. I want to remove, one out of them. My output should look like: (2 Replies)
Discussion started by: raosr020
2 Replies

7. Shell Programming and Scripting

How to sort a text file if certain columns are blank?

Dear all, I am trying to sort a text file based on column 3, 10, 11 and 12. But certain column are blank for some lines. Column 3 has to be in ascending order after sorting. Part of my input file is as follows: CN727990 1 A01 4703 5083 73.28 - A_scaffold000011 4365605 4365985 73.28 +... (10 Replies)
Discussion started by: huiyee1
10 Replies

8. Shell Programming and Scripting

Inserting blank columns in already present CSV file

Hi, i have a csv file which have headers and values of it like below : headers --> CI Ref SerialNumber LastScanDate values --> VMware-42,VMware-42,Tue, 20 May 2014 11:03:44 +0000 i want to have a above csv in below format : headers --> CI Name CI Description CI Ref... (6 Replies)
Discussion started by: omkar.jadhav
6 Replies

9. Shell Programming and Scripting

Remove blank columns from a tab delimited text file

Hello, I have some tab delimited files that may contain blank columns. I would like to delete the blank columns if they exist. There is no clear pattern for when a blank occurs. I was thinking of using sed to replace instances of double tab with blank, sed 's/\t\t//g' All of the examples... (2 Replies)
Discussion started by: LMHmedchem
2 Replies

10. Shell Programming and Scripting

Script to find blank records in a file except for few columns

I have a file with the following format: X|High|2|GIC|DM||XHM|||6 Months X|Moderate|2|GIC|DM||XHM|||6 Months X|High|2|GCM|DM||XSF|||6 Months X|Med|2|GCM|DM||XSF|||6 Here there are ten columns but I need to print rows having blank records in any of the rows (except for 6th,8th and 9th... (10 Replies)
Discussion started by: chatwithsaurav
10 Replies
cut(1)								   User Commands							    cut(1)

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 indi- cate 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_MES- SAGES, 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ 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 SunOS 5.11 29 Apr 1999 cut(1)
All times are GMT -4. The time now is 03:06 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy