Visit Our UNIX and Linux User Community

How to sum values from top

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How to sum values from top
# 1  
Old 10-13-2009
Question How to sum values from top

Im looking for way to sum numbers from top. For example i have such command
top -b -n | grep Cpu | cut -c 35 - 39

which give me output 97.0 . Ho can i do with that value any arithmetic actions (for example 97.0 +1)?
c = $((top -b -n | grep Cpu | cut -c 35 - 39))

gives me eof expression error...

Last edited by zaxxon; 10-13-2009 at 03:42 AM.. Reason: code tags
# 2  
Old 10-13-2009
When defining variables, don't leave spaces between the variable name the equal sign and the value. On my box top is missing a value for -n. Also when using a range with cut, leave spaces out too. You should work on the single commands first so that they work and then put them together.

c = $((top -b -n | grep Cpu | cut -c 35 - 39))
 ^ ^            ^                      ^ ^
 | |            |                      | |
Delete those..  |  ..spaces, they are wrong!
       Missing a value here

Last edited by zaxxon; 10-13-2009 at 05:50 AM.. Reason: Note for missing value
# 3  
Old 10-13-2009
c=$((top -b -n 1| grep Cpu | cut -c 35-39))

gives the same error message...

arithmetic expression: expecting EOF: "top -b -n 1| grep Cpu | cut -c 35-39"

Last edited by zaxxon; 10-13-2009 at 08:06 AM.. Reason: code tags
# 4  
Old 10-13-2009

Hope this will be helpful.

$ top -b -n 1| grep Cpu| cut  -c35-39
$ echo `top -b -n 1| grep Cpu| cut  -c35-39` + 1| bc -l
$ echo `top -b -n 1| grep Cpu| cut  -c35-39` + 1| bc -l| read tvar
$ echo $tvar

# 5  
Old 10-13-2009
Put it into single brackets not double - you don't want any calculations there. $() is the same as ranjithpr wrote with ``.

Also start using [code] and [/code] when posting code, data or logs please.
# 6  
Old 10-13-2009
echo `top -b -n 1| grep Cpu| cut  -c35-39` + 1| bc -l| read tvar
echo $tvar

gives error message illegal character |

echo $( top -b -n 1| grep Cpu| cut  -c35-39 ) + 1| bc -l| read tvar
echo $tvar

works without error, but gives no output
# 7  
Old 10-13-2009
Stay with your original line:
c=$(top -b -n 1| grep Cpu | cut -c 35-39)
echo $c

Previous Thread | Next Thread
Test Your Knowledge in Computers #411
Difficulty: Medium
Aside from its AT&T UNIX base, XENIX incorporated elements from BSD, notably the vi text editor and its supporting libraries (termcap and curses).
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to sum the value with negative values?

Hi Gurus, I have requirement need to sum the value, the logic is if the value is negative then time -1, I tried below two ways. one is failed, another one doesn't work. awk -F"," '{if($8< 0 $8*-1 else $8) sum+=$8}{print sum, $8} END{printf("%.2f\n",sum)}' awk -F","... (4 Replies)
Discussion started by: ken6503
4 Replies

2. UNIX for Dummies Questions & Answers

Sum up values followed by pattern

I have a file with data merged from multiple files. File contains header, data and trailer of multiple files. The trailer starts with 99 and delimiter is ~. Trailer 99~120 99~30 As it is a merged file we i have multiple lines followed by 99~. Need help to find sum of values which are there... (4 Replies)
Discussion started by: santoshdrkr
4 Replies

3. UNIX for Dummies Questions & Answers

sum values based on ID

Hi, I would like to be able to sum up the counts of a column by the ID of another column. Example (although the actual file I have has thousands of IDs): Input file: A1BG-AS1:001 3 A1BG-AS1:002 0 A1BG-AS1:003 2 A1CF:001 1038 A1CF:002 105 A1CF:003 115 A1CF:004 137 Desired output... (3 Replies)
Discussion started by: fadista
3 Replies

4. Shell Programming and Scripting

How do I find the sum of values from two arrays?

Hi I have redc containing the values 3, 6, 2, 8, and 1. I have work containing the values 8, 2, 11, 7, and 9. Is there a way to find the sum of redc and work? I need to compare the sum of those two arrays to something else, so is it okay to put that into my END? TY! (4 Replies)
Discussion started by: razrnaga
4 Replies

5. Shell Programming and Scripting

Getting a sum of column values

I have a file in the following layout: 201008005946873001846130058030701006131840000000000000000000 201008006784994001154259058033001009527844000000000000000000 201008007323067002418095058034801002418095000000000000000000 201008007697126001722141058029101002214158000000000000000000... (2 Replies)
Discussion started by: jclanc8
2 Replies

6. Shell Programming and Scripting

How to sum up two decimal values?

I am running the following script : cat ind_sls_extr_UX.out_sorted | while read each_rec do count=`echo "${each_rec}" | cut -c1-2` if then final_amount=0 amount=`echo "${each_rec}" | cut -c280-287` echo "${amount}" final_amount=`expr ${amount} + ${amount}` ... (7 Replies)
Discussion started by: mady135
7 Replies

7. Shell Programming and Scripting

Sum of values coming in a row

Hi, my requirement is to sum values in a row. eg: input is: sum,value1,value2,value3,.....,value N Required Output: sum,<summation of N values> Please help me... (5 Replies)
Discussion started by: MrGopal666
5 Replies

8. Shell Programming and Scripting

print unique values of a column and sum up the corresponding values in next column

Hi All, I have a file which is having 3 columns as (string string integer) a b 1 x y 2 p k 5 y y 4 ..... ..... Question: I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the... (6 Replies)
Discussion started by: amigarus
6 Replies

9. Shell Programming and Scripting

how to sum values from 2 different files?

Hi I am trying to add count values from two different files into one file. Could any body please suggest me best command to do this? My problem was as follows: a.txt b.txt c.txt 10 20 30(needed) i tried cat a.txt b.txt > c.txt (its not adding the values) Thanks in advance.. Praveen (8 Replies)
Discussion started by: npk2210
8 Replies

10. Shell Programming and Scripting

How to sum column 1 values

I have a file file like this. I want to sum all column 1 values. input A 2 A 3 A 4 B 4 B 2 Out put A 9 B 6 (3 Replies)
Discussion started by: suresh3566
3 Replies

Featured Tech Videos