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which one of the following is the correct expression to ignore line with multiple spaces after any string

cat file | grep -v "xyz *$"
or
cat file | grep -v "xyz[ ]*$"


do i need "[ ]*" to...

use of "comm" command solved the problem..

Below case does not work


T=b; echo "a,0.1,0,0,b,0" | awk -F"$T" -v T=$T '{gsub(/0/,"1",$1); print $1 T $2}'


output should be

a,0.1,1,1,b,0

but it is

a,1.1,1,1,b,0

$ echo "a,0,0,0,b,0" | sed 's/,0,/,1,/g'

gives output as

$ a,1,0,1,b,0


rather than as

a,1,1,1,b,0


how can i solve this problem

Thanks a lot in advance....

Use code tags.

i want to compare 2 files and generate below 3 files:
1. new lines
2. updated lines
3. deleted lines

are there any one liners for each one of them.

Note the method to find duplicates is...

THRESHOLD="1.25"
ratio=$( echo "scale=2; ${prev}/${current}" | bc )

if [ $(echo "${ratio} > ${THRESHOLD}" | bc ) -eq 1 ]; then
split_date=`echo ${line} | cut -d, -f2`
fi

got the...

$ echo '1 < 2' | bc
1
$echo '1 > 2' | bc
0

whats wrong with this line:
if [ $(echo "${ratio} > ${THRESHOLD}" | bc ) -eq 1 ]; then

why is it giving error:
(standard_in) 2: parse error
(standard_in) 1: parse error

---------- Post...

pravin and agn - looks like what you guys said is not helping

#################### CODE ####################
#!/bin/sh

a="1.23"
b="2.45"

if [ $a > $b ]; then
echo "string compare:...

Below part of script, is working fine sometimes and gives error sometime.
I am doing float operations, checking if x > y.

##########CODE##########
THRESHOLD="1.25"
ratio=$( echo "scale=2;...

perl script i am using for search and replace is not working as expected...
I am using it for in-place search/replace.

I am new to perl, can someone please help me solving the issue here.
...

from this input

WEBELSOLAR,29122009,1:1
WIPRO,15062010,2:3
ZANDUREALT,18012007,1:3

i want output as
WEBELSOLAR,20091229,1:1
WIPRO,20100615,2:3
ZANDUREALT,20070118,1:3

basically input...

thanks a lot radoulov... this is really of great help :)

thanks a lot radoulov

---------- Post updated at 02:09 PM ---------- Previous update was at 02:07 PM ----------

can above formula perform sorting for multiple columns also.
in case yes, can...

I want a command which will sort on the basis of value between . and :

The solution provided might have issues if there are more dots in the input line after the : which makes this solution prone...

05.50.25:BMWG.DE:RESTRICTED:N:
05.50.25:BASF.MI:RESTRICTED:N:
05.50.25:AIRE.S:RESTRICTED:S2:
05.50.25:BORE.ST:RESTRICTED:N:
05.50.25:ANDR.VI:RESTRICTED:S2:

this is how it should look like

05.50.25:AIRE.S:RESTRICTED:S2:
05.50.25:ANDR.VI:RESTRICTED:S2:
05.50.25:BASF.MI:RESTRICTED:N:
05.50.25:BMWG.DE:RESTRICTED:N:
05.50.25:BORE.ST:RESTRICTED:N:

I can sort of the basis of second...

I have record having 10 fields and each field being printed on a new line, first line cotains name of exchange, 2nd line stock name, third line stock price, etc etc...

now i want to retrieve data...