Loop


 
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# 1  
Old 01-05-2013
Loop

Hi
I wrote shell script to do the flowing count from 5 and down but doesn’t work please see my program
Code:
#Bash

x=0
y=10


while  (( x < y ))
do
(( x = x + 1 ))

grep -A $x 5 numbers >>file4.txt
done

these the output
Code:
5
6
5
6
7
5
6
7
8
5
6
7
8
9
5
6
7
8
9
10
5
6
7
8
9
10

5
6
7
8
9
10

Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 01-05-2013 at 03:57 PM.. Reason: code tags, please!
# 2  
Old 01-05-2013
Your requirement is not so clear. Can you provide desired output?

BTW If your requirement is to generate sequence of numbers ranging from 0 - 10 in BASH. Then you can simply use a for loop
Code:
#!/bin/bash

for x in {0..10}
do
  echo $x
done

# 3  
Old 01-05-2013
loop

I would like to have the output like this
5
6
7
8
9
# 4  
Old 01-05-2013
Code:
#!/bin/bash

for x in {5..9}
do
  echo $x
done

# 5  
Old 01-05-2013
loop

Im using grep -A

---------- Post updated at 02:25 AM ---------- Previous update was at 02:20 AM ----------

in my program grep -A $x is lasting to down lines
grep -A $x 5 numbers >>file4.txt

so I have file called number, numbers saved inside it numbers from 1 to 10
grep -A $x going to start greping from 5 to 10
but what im getting output scramble instead of
5
6
7
8
9
10
# 6  
Old 01-05-2013
Code:
#!/bin/bash

for x in {5..9}
do
   grep -A$x PATTERN FILE
done

Note: Replace PATTERN with the pattern you want to grep and FILE with the file name you want to grep.

---------- Post updated at 15:36 ---------- Previous update was at 15:29 ----------

Please note that -A option is used to print NUM lines of trailing context after matching lines.
# 7  
Old 01-05-2013
loop

Is print many lines instead of one round of numbers from 5 to 10
Code:
5
6
7
8
9
10
5
6
7
8
9
10

5
6
7
8
9
10

5
6
7
8
9
10

5
6
7
8
9
10

Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 01-05-2013 at 05:42 PM.. Reason: once again - please use code tag!
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