awk bash help


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting awk bash help
# 1  
Old 05-08-2009
awk bash help

Hi,
I'm trying to read a file containing lines with spaces in them.

The inputfile looks like this
------------------------------
Command1 arg1 arg2
Command2 arg5 arg6 arg7
-------------------------------

The shell code looks like this...

lines=`awk '{ print }' inputfile`

for LINE in $lines ; do
echo ${LINE}
done

output is
--------------------
Command1
arg1
arg2
Command2
arg5
arg6
arg7
--------------------

What I really want is
--------------------
Command1 arg1 arg2
Command2 arg5 arg6 arg7


How do I do it..

TIA.
# 2  
Old 05-08-2009
Quote:
Originally Posted by a-gopal
Hi,
I'm trying to read a file containing lines with spaces in them.

The inputfile looks like this
------------------------------
Command1 arg1 arg2
Command2 arg5 arg6 arg7
-------------------------------

The shell code looks like this...

lines=`awk '{ print }' inputfile`

In most shells, the usual way to get an entire file into a variable is:

Code:
file=$( cat "$FILE" )

In bash (and ksh93) you can save a process with:

Code:
file=$( < "$FILE" )

But the usual way to read a file line by line in the shell is:

Code:
n=0
while IFS= read -r line
do
  printf "%3d: %s\n" "$(( n += 1 ))" "$line"
done < inputfile

Quote:

for LINE in $lines ; do
Code:
IFS=$'\n'; for line in $lines; do

Quote:

echo ${LINE}
done
# 3  
Old 05-08-2009
Thanks that worked!
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

New problem with awk using bash

Hi! I have a new problem with awk, this time I think is because I'm using it in bash and I don't know how to put the valor of the variable in awk. Here is the code: #!/bin/bash for i in 1 2 3 4 5 do a=$i b=$ awk '$1>=a&&$1<=b {print $1,$2,$3}'>asdf test... (3 Replies)
Discussion started by: florpi
3 Replies

2. Shell Programming and Scripting

Returning a value from awk to bash

Hi I am a newbie starting bash and I have a simple need to return the result of an operation from awk to bash. basically I want to use awk to tell me if "#" exists in a string, and then back in bash, i want to do an IF statement on this return in order to do other things. In my bash shell I... (2 Replies)
Discussion started by: oahmad
2 Replies

3. Shell Programming and Scripting

Help in awk/bash

Hi, I am also a newbie in awk and trying to find solution of my problem. I have one reference file 1.txt with 2 columns and I want to search other 10 files (a.txt, b.txt......h.txt each with 5 columns) corresponding to the values of 2nd column from 1.txt. If the value from 2nd column from 1.txt... (33 Replies)
Discussion started by: bioinfo
33 Replies

4. Shell Programming and Scripting

Help in awk/bash

Hi, I have two files: atom.txt and g.txt atom.txt has multiple patterns but I am showing only two patterns each ending with ENDMDL: ATOM 1 N SER A 1 35.092 83.194 140.076 1.00 0.00 N ATOM 2 CA SER A 1 35.216 83.725 138.725 1.00 0.00 C TER ENDMDL ATOM 1 N SER A 1 35.683 81.326 139.778 1.00... (11 Replies)
Discussion started by: bioinfo
11 Replies

5. UNIX for Dummies Questions & Answers

Help in awk/bash

Hi, I am also a newbie in awk and trying to find solution of my problem. I have one reference file 1.txt with 2 columns and I want to search other 10 files (a.txt, b.txt......h.txt each with 5 columns) corresponding to the values of 2nd column from 1.txt. If the value from 2nd column from 1.txt... (0 Replies)
Discussion started by: bioinfo
0 Replies

6. Shell Programming and Scripting

AWK/Bash script

I would like to write a script to extend this command to a general case: BEGIN {s_0=0;n_0=0}{n_0++;s_0+=($51-$1)^2}END {print sqrt(s_0/n_0)} i.e. so that BEGIN {s_0=0;n_0=0}{n_0++;s_0+=($51-$1)^2}END {print sqrt(s_0/n_0)} BEGIN {s_1=0;n_1=0}{n_1++;s_1+=($51-$2)^2}END {print... (3 Replies)
Discussion started by: chrisjorg
3 Replies

7. UNIX for Dummies Questions & Answers

Help with BASH/AWK queries ....

Hi Everyone, I have an input file in the following format: score.file1.txt contig00045 length=566 numreads=19 1047 0.0 contig00055 length=524 numreads=7 793 0.0 contig00052 length=535 numreads=10 607 e-176 contig00072 length=472 numreads=46 571 e-165... (8 Replies)
Discussion started by: Fahmida
8 Replies

8. Shell Programming and Scripting

scripting help with bash and awk

I'm trying to reformat some tide information into a useable format and failing. Input file is.... 4452 CHENNAI (MADRAS) 13°06'N, 80°18'E India East Coast 01 June 2009 UT(GMT) Data Area 3. Indian Ocean (northern part) and Red Sea to Singapore 01/06/2009 00:00 0.7 m 00:20 0.7 m 00:40... (3 Replies)
Discussion started by: garethsays
3 Replies

9. Shell Programming and Scripting

Is there any better way for sorting in bash/awk

Hi, I have a file which is:- 1 6 4 8 2 3 2 1 9 3 2 1 3 3 5 6 3 1 4 9 7 8 2 3 I would like to sort from field $2 to field $6 for each of the line to:- 1 2 3 4 6 8 2 1 1 2 3 9 3 1 3 3 5 6 4 2 3 7 8 9 I came across this Arrays on example 26-6. But it is much complicated. I am... (7 Replies)
Discussion started by: ahjiefreak
7 Replies

10. Shell Programming and Scripting

BASH with AWK

Hello, I have a file.txt with 20000 lines and 2 columns each which consists of current_filename and new_filename . I want to create a script to find files in a directory with current_filename and move it to new folder with new_filename. Could you please help me how to do that?? ... (2 Replies)
Discussion started by: narasimhulu
2 Replies
Login or Register to Ask a Question