shell script help

[1a]

i want to compare two values in shell script .

example-

ca=50

pa=45

if [ $ca -gt $pa ]

i need output greater value . how to print the vaule after the if statement.

[Hakki Aydin Ucar]

 if [ $ca -gt $pa ]
 then
echo $ca
fi

[V. Nyga]

if [ $ca -gt $pa ]
 then
echo $ca
 elif [ $pa -gt $ca ]

 then
echo $pa
 else
echo "They are equal"
fi

(Sorry Hakki) :-)

[Hakki Aydin Ucar]

Danke ! :smileyvery-happy:

I missed the half part of code..

[James R. Ferguson]

Hi:

Since you only want the greater value, or if they are equal, merely that value, you could use:

# [ ${ca} -gt ${pa} ] && echo ${ca} || echo ${pa}

Regards!

...JRF...

[Dennis Handly]

If you are using a real shell you can use C style expressions:

if (( ca > pa )); then

   echo $ca

else

   echo $pa

fi

This prints the maximum of the two.

[1a]

hi every one thanks for you reply

Dennis,

i user your script , it working fine . please tell how to print the greater value in one text file

[1a]

Sorry dennis,

i use your script , it is working fine. please tell how to print the greater value in one text file

because i need output value through mail, so i plan to send mailx command.

[Tom Maloy]

Starting with Dennis' script, and noting that nothing will print if the values are equal, this might work:

if (( ca > pa )); then

   echo $ca

else

   echo $pa

fi   >  max.txt

mailx  -s  "max values"  mail_address_here  <  max.txt

[Dennis Handly]

And if you don't plan to send much text to your message:

if (( ca > pa )); then

   echo $ca

else

   echo $pa

fi  | mailx  -s  "max values"  mail_address_here

>noting that nothing will print if the values are equal:

The above fragment always prints a value.