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for loop with whole line using cat

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# 1  
Old 08-02-2012
Error for loop with whole line using cat
Hi all,

I need to create loop script to read full line and append a variable to each line.

cat file

Quote:
136 1 24 048800 id N4 No_Light
137 1 25 048900 id N4 No_Light
140 1 28 048c00 id N4 No_Light
262 1 38 048e80 id N4 No_Light
263 1 39 048f80 id N4 No_Light
20 2 4 041400 id N4 No_Light


I need the output like below

HTML Code:
10.0.0.1,136 1 24 048800 id N4 No_Light
10.0.0.1,137 1 25 048900 id N4 No_Light
10.0.0.1,140 1 28 048c00 id N4 No_Light
10.0.0.1,262 1 38 048e80 id N4 No_Light
10.0.0.1,263 1 39 048f80 id N4 No_Light
10.0.0.1,20 2 4 041400 id N4 No_Light
This is my script
Code:
for f in `cat /home/pa039410/switch-ip/all-switch-ip.txt`
do
plink -ssh -v 123@$f -pw 456 switchshow |grep No_Light > /home/pa039410/switch-ip/switchshow-nolight.txt
plink -ssh -v 123@$f -pw 456 switchshow |grep -i online > /home/pa039410/switch-ip/switchshow-online.txt
for g in `cat /home/pa039410/switch-ip/switchshow-nolight.txt`
do
echo $f,$g >> /home/pa039410/switch-ip/switchshow-all-withip.txt 
for h in `cat /home/pa039410/switch-ip/switchshow-nolight.txt`
do
echo $f,$h >> /home/pa039410/switch-ip/switchshow-all-withip.txt
done
done
done

But i getting the output like this

HTML Code:
10.62.75.173,id
10.62.75.173,N4
10.62.75.173,No_Light
10.62.75.173,107
10.62.75.173,11
10.62.75.173,11
10.62.75.173,046b00
10.62.75.173,id
10.62.75.173,N4
10.62.75.173,No_Light
10.62.75.173,109
10.62.75.173,11
10.62.75.173,13
10.62.75.173,046d00
10.62.75.173,id
10.62.75.173,N4
10.62.75.173,No_Light
10.62.75.173,231
# 2  
Old 08-02-2012
Code:
$ cat test.txt
136 1 24 048800 id N4 No_Light
137 1 25 048900 id N4 No_Light
140 1 28 048c00 id N4 No_Light
262 1 38 048e80 id N4 No_Light
263 1 39 048f80 id N4 No_Light
20 2 4 041400 id N4 No_Light

$ awk '{$0="10.0.0.1,"$0}1' test.txt
10.0.0.1,136 1 24 048800 id N4 No_Light
10.0.0.1,137 1 25 048900 id N4 No_Light
10.0.0.1,140 1 28 048c00 id N4 No_Light
10.0.0.1,262 1 38 048e80 id N4 No_Light
10.0.0.1,263 1 39 048f80 id N4 No_Light
10.0.0.1,20 2 4 041400 id N4 No_Light

# 3  
Old 08-02-2012
you can use awk '{print "10.0.0.1" "," $0}' infile
# 4  
Old 08-02-2012
Code:
cat xx |sed -n 's/.*/10\.0\.0\.1,&/p'

Code:
cat xx |while read line;do echo "10.1.1,${line}" ;done

Code:
cat xx |awk '{print "10.1.1,"$0}'

# 5  
Old 08-02-2012
Quote:
Originally Posted by yanglei_fage
Code:
cat xx |sed -n 's/.*/10\.0\.0\.1,&/p'

Code:
cat xx |while read line;do echo "10.1.1,${line}" ;done

Code:
cat xx |awk '{print "10.1.1,"$0}'

useless use of cat award

Useless Use of Cat Award

awk and sed commands are able to process the file by its own. So dont use cat command
# 6  
Old 08-02-2012
Quote:
Originally Posted by itkamaraj
Code:
$ cat test.txt
136 1 24 048800 id N4 No_Light
137 1 25 048900 id N4 No_Light
140 1 28 048c00 id N4 No_Light
262 1 38 048e80 id N4 No_Light
263 1 39 048f80 id N4 No_Light
20 2 4 041400 id N4 No_Light
 
$ awk '{$0="10.0.0.1,"$0}1' test.txt
10.0.0.1,136 1 24 048800 id N4 No_Light
10.0.0.1,137 1 25 048900 id N4 No_Light
10.0.0.1,140 1 28 048c00 id N4 No_Light
10.0.0.1,262 1 38 048e80 id N4 No_Light
10.0.0.1,263 1 39 048f80 id N4 No_Light
10.0.0.1,20 2 4 041400 id N4 No_Light


what does '1' here mean, is there a man page?
# 7  
Old 08-02-2012
Code:
$ sed 's/^/10.0.0.1,/' input.txt
10.0.0.1,136 1 24 048800 id N4 No_Light
10.0.0.1,137 1 25 048900 id N4 No_Light
10.0.0.1,140 1 28 048c00 id N4 No_Light
10.0.0.1,262 1 38 048e80 id N4 No_Light
10.0.0.1,263 1 39 048f80 id N4 No_Light
10.0.0.1,20 2 4 041400 id N4 No_Light

---------- Post updated at 09:12 PM ---------- Previous update was at 09:11 PM ----------

Quote:
Originally Posted by yanglei_fage
what does '1' here mean, is there a man page?
awk evaluates the 1 as true and the prints the entire line by default, including a newline.
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