Sponsored Content
Top Forums Shell Programming and Scripting Subtracting values from variable Post 302714491 by sdosanjh on Friday 12th of October 2012 08:51:15 AM
Old 10-12-2012
i Tried the follwoing using array but no go

Code:
for (( i = 0 ; i < ${#orig[@]} ; i++ ))
do
for (( j = 0 ; j < ${#prev[@]} ; j++ ))
do
if [ $i == $j ];
then
(( DIFF = ${orig[i]} - ${prev[j]} ))
echo $DIFF;
else
echo ${orig[i]}  ${prev[j]} > /dev/null 2>&1
fi
done
done

---------- Post updated at 04:51 AM ---------- Previous update was at 04:48 AM ----------

@pamu

below is the error i am gettng

Code:
> echo "" | awk -v FV="$orig" -v SV="$prev" '{ n=split(FV,F);split(SV,S)}END{for(i=1;i<=n;i++){printf (F[i] - S[i])" "}}'
awk: syntax error near line 2
awk: bailing out near line 2

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Storing values in variable

Hi All, Here is the description of the problem. I am scripting for database access using k-shell on solaris box dbaccess <databasename> - << EOF 2>/dev/null | awk 'BEGIN {FS=" "}\ {printf "%s", $1}' | grep -v "^$" | \ read cnt1 OUTPUT TO PIPE cat WITHOUT HEADINGS select count(*) from... (1 Reply)
Discussion started by: matrixmadhan
1 Replies

2. UNIX for Dummies Questions & Answers

Subtracting an Integer from a Variable

Hello, I am in following situation.- COUNT=`ls -l | wc -l` echo $COUNT ---> 26 NO_OF_FILES=$COUNT-1 echo $NO_OF_FILES ---> 26-1 Here, I want the output to be 25. How could I do this. It seems simple, but I am not getting it. Please help me. (2 Replies)
Discussion started by: The Observer
2 Replies

3. UNIX for Dummies Questions & Answers

Dynamic variable values

Bit of a newbie :D with regard to unix scripting and need some advice. Hopefully someone can help with the following: I have a predefined set of variables as follows: AAA_IP_ADD=1.1.1.1 BBB_IP_ADD=2.2.2.2 I have a funnction call which retrieves a value into $SUPPLIER which would be... (3 Replies)
Discussion started by: ronnie_uk
3 Replies

4. Shell Programming and Scripting

Reading variable from file variable values

Hi, Here is the output of lpstat. I would like to read value of Queue which is(abxxxxb1)and status that is DOWN in first line. i dont care what is in second line. any one can help me.thanks Queue Dev Status Job Files User PP % Blks Cp Rnk ------- ----- ---------... (5 Replies)
Discussion started by: sagii
5 Replies

5. Shell Programming and Scripting

Assign values to variable

Hi Masters, I want to assign the values of one variable to another variable. Here the varaible name 'var' is dynamic. I know the values of V_2 and U_3, but If the i/p of TYPE is 'U' and the NO is 3, then I want to assign the values of U_3 to var. How we can achieve it? TYPE="U"... (4 Replies)
Discussion started by: ecearund
4 Replies

6. UNIX for Dummies Questions & Answers

Subtracting values from 2 columns in a file

Hello, I have a file with 5 columns that looks like this: A1BG chr19 + 58863335 58866549 A1BG chr19 - 58858171 58864865 A2LD1 chr13 - 101182417 101186056 A2LD1 chr13 - 101182417 101241046 A2M chr12 - 9220303 9268558 A2ML1 ... (5 Replies)
Discussion started by: wolf_blue
5 Replies

7. Shell Programming and Scripting

Searching columns and subtracting values in awk

Hi everyone, I had a similar question a couple days ago but my problem has gotten significantly (to me anyway) more complex. I have two files: File 1: 0808 166 166 62 9 0 1000fights 1 1 2 1 0 100places2visit 2 2 2 2 0 10veronica91 167 167 3 1 0 11thgorgeous 346 346 3806 1461 122... (2 Replies)
Discussion started by: collards
2 Replies

8. Shell Programming and Scripting

Filtering values in variable

Hi, is there a faster/simpler way to filter values from the variable1 in variable2? example: variable1="A|B|C|E" variable2="A|B|C|D|F" output: "A|B|C" Thanks, zzavilz (4 Replies)
Discussion started by: zzavilz
4 Replies

9. Shell Programming and Scripting

Variable with multiple values

Hello I need to alter a script to check for a flag file but there are now more than one type of flag file in my directory. Basically if any of these flg files exist then the MASK value should be set? Flag files to be included in assignment to variable e2e_scheduled*.flg COLL_STOP*.flg... (1 Reply)
Discussion started by: andymay
1 Replies

10. UNIX for Beginners Questions & Answers

Changing CSV files with date . Subtracting date by values

Hi All, I have a CSV file which is as below. Basically I need to take the year column in it and find if the year is >= 20152 . If that is then I should subtract all values by 6. In the below example in description I am having number mentioned as YYWW so I need to subtract those by -5. Whereever... (8 Replies)
Discussion started by: arunkumar_mca
8 Replies
BITMAP_ONTO(9)						  Basic Kernel Library Functions					    BITMAP_ONTO(9)

NAME
bitmap_onto - translate one bitmap relative to another SYNOPSIS
void bitmap_onto(unsigned long * dst, const unsigned long * orig, const unsigned long * relmap, int bits); ARGUMENTS
dst resulting translated bitmap orig original untranslated bitmap relmap bitmap relative to which translated bits number of bits in each of these bitmaps DESCRIPTION
Set the n-th bit of dst iff there exists some m such that the n-th bit of relmap is set, the m-th bit of orig is set, and the n-th bit of relmap is also the m-th _set_ bit of relmap. (If you understood the previous sentence the first time your read it, you're overqualified for your current job.) In other words, orig is mapped onto (surjectively) dst, using the the map { <n, m> | the n-th bit of relmap is the m-th set bit of relmap }. Any set bits in orig above bit number W, where W is the weight of (number of set bits in) relmap are mapped nowhere. In particular, if for all bits m set in orig, m >= W, then dst will end up empty. In situations where the possibility of such an empty result is not desired, one way to avoid it is to use the bitmap_fold operator, below, to first fold the orig bitmap over itself so that all its set bits x are in the range 0 <= x < W. The bitmap_fold operator does this by setting the bit (m % W) in dst, for each bit (m) set in orig. Example [1] for bitmap_onto: Let's say relmap has bits 30-39 set, and orig has bits 1, 3, 5, 7, 9 and 11 set. Then on return from this routine, dst will have bits 31, 33, 35, 37 and 39 set. When bit 0 is set in orig, it means turn on the bit in dst corresponding to whatever is the first bit (if any) that is turned on in relmap. Since bit 0 was off in the above example, we leave off that bit (bit 30) in dst. When bit 1 is set in orig (as in the above example), it means turn on the bit in dst corresponding to whatever is the second bit that is turned on in relmap. The second bit in relmap that was turned on in the above example was bit 31, so we turned on bit 31 in dst. Similarly, we turned on bits 33, 35, 37 and 39 in dst, because they were the 4th, 6th, 8th and 10th set bits set in relmap, and the 4th, 6th, 8th and 10th bits of orig (i.e. bits 3, 5, 7 and 9) were also set. When bit 11 is set in orig, it means turn on the bit in dst corresponding to whatever is the twelfth bit that is turned on in relmap. In the above example, there were only ten bits turned on in relmap (30..39), so that bit 11 was set in orig had no affect on dst. Example [2] for bitmap_fold + bitmap_onto: Let's say relmap has these ten bits set: 40 41 42 43 45 48 53 61 74 95 (for the curious, that's 40 plus the first ten terms of the Fibonacci sequence.) Further lets say we use the following code, invoking bitmap_fold then bitmap_onto, as suggested above to avoid the possitility of an empty dst result: unsigned long *tmp; // a temporary bitmap's bits bitmap_fold(tmp, orig, bitmap_weight(relmap, bits), bits); bitmap_onto(dst, tmp, relmap, bits); Then this table shows what various values of dst would be, for various orig's. I list the zero-based positions of each set bit. The tmp column shows the intermediate result, as computed by using bitmap_fold to fold the orig bitmap modulo ten (the weight of relmap). orig tmp dst 0 0 40 1 1 41 9 9 95 10 0 40 (*) 1 3 5 7 1 3 5 7 41 43 48 61 0 1 2 3 4 0 1 2 3 4 40 41 42 43 45 0 9 18 27 0 9 8 7 40 61 74 95 0 10 20 30 0 40 0 11 22 33 0 1 2 3 40 41 42 43 0 12 24 36 0 2 4 6 40 42 45 53 78 102 211 1 2 8 41 42 74 (*) (*) For these marked lines, if we hadn't first done bitmap_fold into tmp, then the dst result would have been empty. If either of orig or relmap is empty (no set bits), then dst will be returned empty. If (as explained above) the only set bits in orig are in positions m where m >= W, (where W is the weight of relmap) then dst will once again be returned empty. All bits in dst not set by the above rule are cleared. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 BITMAP_ONTO(9)
All times are GMT -4. The time now is 11:40 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy