Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Replace values in script reading line by line using sed
Top Forums Shell Programming and Scripting Replace values in script reading line by line using sed Post 302918877 by RavinderSingh13 on Friday 26th of September 2014 01:16:51 AM
Old 09-26-2014
Quote:
Originally Posted by crimsonengineer
So my output would be a script containing the values in the text file:

I would like my script to repeat for each row in the text file. I think this can be accomplished with sed or awk, but unsure how to piece together the proper commands. Thanks so much.
Hello,

Following may help in same.
Code:
awk '{for(i=1;i<=NF;i++){{if(i%2 != 0){print "for pa in " $i ORS "do" ORS "blah blah" ORS "done\n"} else {print "for pb in " $i ORS "do" ORS "blah blah" ORS "done\n"}}}}' Input_file

Output will be as follows.
Code:
for pa in 14.5
do
blah blah
done
 
for pb in 16.7
do
blah blah
done
 
for pa in 7.8
do
blah blah
done
 
for pb in 9.5
do
blah blah
done
 
for pa in 5.6
do
blah blah
done
 
for pb in 3.6
do
blah blah
done
 
for pa in etc
do
blah blah
done
 
for pb in etc
do
blah blah
done

EDIT: Adding more solutions for same.

Code:
awk '{for(i=1;i<=NF;i++){V=i%2 != 0?(V="pa "):(V="pb "); {print "for " V "in " $i ORS "do" ORS "blah blah" ORS "done\n"}}}'  Input_file
OR
awk '{for(i=1;i<=NF;i++){{if(i%2 != 0){V="pa "} else {V="pb "}; print "for " V "in " $i ORS "do" ORS "blah blah" ORS "done\n"}}}' Input_file

Thanks,
R. Singh
Last edited by RavinderSingh13; 09-26-2014 at 02:32 AM.. Reason: Added 2 more solutions for same
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed - Replace Line which contains the Pattern match with a new line

I need to replace the line containing "STAGE_DB" with the line "STAGE_DB $DB # database that contains the table being loaded ($workingDB)" Here $DB is passed during the runtime. How can I do this? Thanks, Kousikan (2 Replies)
Discussion started by: kousikan
2 Replies

2. Shell Programming and Scripting

how can i replace / with new line in shell script or sed ?

1. how can i replace ' / ' with new line in shell script or sed ? 2. how can set a conditon untill null in while loop while ( i== null ) do ...... done (3 Replies)
Discussion started by: mail2sant
3 Replies

3. UNIX and Linux Applications

Reading values from the command line

Hi I want to give the user the choice of whether or not they want to include a certain option when they run the script. This is my getops: while getopts " s: d: r f: e h " option do case $option in f ) dsxfile="$OPTARG";; d ) dbname="$OPTARG";; s ) dsn="$OPTARG";; r )... (0 Replies)
Discussion started by: ladyAnne
0 Replies

4. Shell Programming and Scripting

how to use sed for reading from a file, line by line?

I have a file, from where I need to extract some data. But, the condition is like following : The script will read line by line,while checking if any line starts with 'MN'. If found true, it looks for if the immediate line starts with 'PQ' or not. If its true then, extract few fields from that... (1 Reply)
Discussion started by: mady135
1 Replies

5. Shell Programming and Scripting

sed to replace a line with modified line in same file

i have few lines in a file... i am reading them in a while loop so a particular line is held is $line1.. consider a modified line is held in $line2.... i want to replace $line1 with $line2 in the same file... how to do it..? i have come up till the below code sed "s/$line1/$line2/g" tmpfile.sql... (5 Replies)
Discussion started by: vivek d r
5 Replies

6. Shell Programming and Scripting

Sed Comparing Parenthesized Values In Previous Line To Current Line

I am trying to delete lines in archived Apache httpd logs Each line has the pattern: <ip-address> - - <date-time> <document-request-URL> <http-response> <size-of-req'd-doc> <referring-document-URL> This pattern is shown in the example of 6 lines from the log in the code box below. These 6... (1 Reply)
Discussion started by: Proteomist
1 Replies

7. Shell Programming and Scripting

I need to know how to replace a line after a pattern match with an empty line using SED

Hi How Are you? I am doing fine! I need to go now? I will see you tomorrow! Basically I need to replace the entire line containing "doing" with a blank line: I need to the following output: Hi How Are you? I need to go now? I will see you tomorrow! Thanks in advance.... (1 Reply)
Discussion started by: sags007_99
1 Replies

8. Shell Programming and Scripting

sed command to replace a line at a specific line number with some other line

my requirement is, consider a file output cat output blah sdjfhjkd jsdfhjksdh sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf hellow there this doesnt look good et cetc etc etcetera i want to replace a line of line number 4 ("this doesnt look good") with some other line ... (3 Replies)
Discussion started by: vivek d r
3 Replies

9. Shell Programming and Scripting

Multiple line search, replace second line, using awk or sed

All, I appreciate any help you can offer here as this is well beyond my grasp of awk/sed... I have an input file similar to: &LOG &LOG Part: "@DB/TC10000021855/--F" &LOG &LOG &LOG Part: "@DB/TC10000021852/--F" &LOG Cloning_Action: RETAIN &LOG Part: "@DB/TCCP000010713/--A" &LOG &LOG... (5 Replies)
Discussion started by: KarmaPoliceT2
5 Replies

10. Shell Programming and Scripting

sed command to replace a line in a file using line number from the output of a pipe.

Sed command to replace a line in a file using line number from the output of a pipe. Is it possible to replace a whole line piped from someother command into a file at paritcular line... here is some basic execution flow.. the line number is 412 lineNo=412 Now i have a line... (1 Reply)
Discussion started by: vivek d r
1 Replies

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)
All times are GMT -4. The time now is 10:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy