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Top Forums Shell Programming and Scripting Read column from file and delete rows with some condition.. Post 302740407 by pamu on Thursday 6th of December 2012 06:22:01 AM
Old 12-06-2012
Quote:
Originally Posted by nex_asp
both I tried not working...pasted command with tab sorry....when you save...then 1st column not coming properly...
And please use code tags for code and data sample..

I am not getting what could be the problem..

you may try like this..

Code:
$ cat file
      1.006   5.324079    27.6452    2.40651     2.8315     0.4706    33.1640      1.000
      2.012   5.323260    27.4376    2.88395     2.9420     0.5726    33.3054      2.000
      3.018   5.319734    27.3193    3.17664     3.0671     0.7445    33.3646      3.000
      4.024   5.320370    27.3121    3.55961     2.8734     0.7843    33.3740      4.000
      5.029   5.321427    27.2701    3.27116     2.7069     0.7734    33.4111      5.000
      6.035   5.317643    27.2201    2.99257     2.5828     0.8503    33.4199      6.000
      7.041   5.307164    27.1758    4.18136     3.0051     0.9228    33.3773      7.000
      8.047   5.305160    27.1626    4.47475     3.4154     0.8651    33.3724      8.000

Code:
$ awk '{print $8,$3,$7}' OFS="\t" file > out_file.csv

$ cat out_file.csv
1.000   27.6452 33.1640
2.000   27.4376 33.3054
3.000   27.3193 33.3646
4.000   27.3121 33.3740
5.000   27.2701 33.4111
6.000   27.2201 33.4199
7.000   27.1758 33.3773
8.000   27.1626 33.3724

Code:
$ awk '{print $NF,$(NF-5),$(NF-1)}' OFS="\t" file > out_file.csv

$ cat out_file.csv
1.000   27.6452 33.1640
2.000   27.4376 33.3054
3.000   27.3193 33.3646
4.000   27.3121 33.3740
5.000   27.2701 33.4111
6.000   27.2201 33.4199
7.000   27.1758 33.3773
8.000   27.1626 33.3724

Hope this helps you..Smilie

EDIT: about tab separated files. Yes it may look like having different spacing but still they are tab separated. Don't just look at spacings.Smilie

pamu
 

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CAT(1)							      General Commands Manual							    CAT(1)

NAME
cat, read, nobs - catenate files SYNOPSIS
cat [ file ... ] read [ -m ] [ -n nline ] [ file ... ] nobs [ file ... ] DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus cat file prints a file and cat file1 file2 >file3 concatenates the first two files and places the result on the third. If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input. Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts. The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines. Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a- time data. It never reads any more data from the input than it prints to the output. Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window. SOURCE
/src/cmd/cat.c /src/cmd/read.c /bin/nobs SEE ALSO
cp(1) DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines. BUGS
Beware of and which destroy input files before reading them. CAT(1)
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