Checking the Column values in a file. Post: 302544023

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check Null values in a file column by column if columns are Not NULLs

Hi All, I have a table with 10 columns. Some columns(2nd,4th,5th,7th,8th and 10th) are Not Null columns. I'll get a tab-delimited file and want to check col by col and generate seperate error code for each col eg:102 if 2nd col value is NULL and 104 if 4th col value is NULL so on... I am a...

2. UNIX for Dummies Questions & Answers

Create file with column values

Hi, I have a data file looks like the following ID STARTDATE ENDDATE 101 20090520 20090521 102 20090521 20090522 103 20090522 20090523 104 20090523 20090524 105 20090524 20090525 106 20090525 20090526 107 ...

3. Shell Programming and Scripting

print unique values of a column and sum up the corresponding values in next column

Hi All, I have a file which is having 3 columns as (string string integer) a b 1 x y 2 p k 5 y y 4 ..... ..... Question: I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the...

4. UNIX for Dummies Questions & Answers

Replace values in a specified column of a file

Hello, I have a file with four columns and I would like to replace values in the second column only. An arbitrary example is: 100 A 105 B 200 B 205 C 300 C 305 D 400 D 405 E 500 E 505 F I need to replace the second column as shown below: ...

5. UNIX for Dummies Questions & Answers

replace a column with values from another file

Dear all, I have a file1.pdb in pdb format and a dat file2 containing values, corresponding to the atoms in the pdb file. these values (file2.dat) need to be in the column instead of the 0.00 (file1) values for each atom in file1.pdb .(the red values must be replaced by the blue ones,in order)...

6. UNIX for Dummies Questions & Answers

shift values in one column as header for values in another column

Hi Gurus, I have a tab separated text file with two columns. I would like to make the first column values as headings for the second column values. Ex. >value1 subjects >value2 priorities >value3 requirements ...etc and I want to have a file >value1 subjects >value2 priorities...

7. Shell Programming and Scripting

Adding column values in a file

Hi, I am having a file in the following format. for aaaa 1111 1234 2222 3434 for bbbb 1111 3434.343 2222 2343 for cccc 3333 2343.343 4444 89000 for dddd 1111 5678.343 2222 890.3 aaaa 2343.343 bbbb 34343.343

8. Shell Programming and Scripting

Remove the values from a certain column without deleting the Column name in a .CSV file

9. Shell Programming and Scripting

Replace column values from other file

I have one file as it has the following format File1 S No Site IP Address 1 Australia 192.168.0.1/26 2 Australia 192.168.0.2/26 3 Australia 192.168.0.3/26 I need awk/sed command to replace the column2 value ( under Site) with some other...

LEARN ABOUT OSX

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD