Shell Programming and Scripting

Hi friends,

i have written one small script named as "size.sh".....
while running its giving

syntax error at line no 2: 'str=$' unexpected.

How to run this file ??? please help me.

file content is :

-----------------------------
#!/bin/sh
str=$( df -k | grep /usr/local)
strlen=${#str}
Sindex=$( expr $strlen - 25)
Eindex=$( expr $Sindex + 2)
Size=`echo $str | cut -c$Sindex-$Eindex`

if ["$Size" -gt 60]
then
echo "Storage size is above 60. Plz clear the cache"
fi

------------------------------

Regards,
Samuel G.

which flavour/version of unix you are using?
I am not getting the error which you mentioned , I am using AIX 5.0

Anyway modify the statment str=$( df -k | grep /usr/local) with
str=`df -k | grep /usr/local`
You may not get error

try it!!!!
Shihab

Hi shihba,

thank u

str=`df -k | grep /usr/local` is working fine.

but the next line
strlen=${#str} is giving error that "bad substitution".
please help me in this...

Regards,
Sam.

Hi Sam,
It seems you are using old version of Unix which is not supporting this - I am not sure
your can rewrite the statment strlen=${#str} with strlen=`expr length $str`. This may work.

By the way which unix flavour you are using and the version?

Shihab

Using backticks is not recommended. Your original form was ok save for proper quotation:

str="$(df -k | grep /usr/local)"

which could better be written:

str="$( df -k /usr/local | sed '1d' )"

The second error is because of typo: "${# ...}" only works with arrays, giving back the number of elements in an array.

The whole construction with strlen is not too elegant, this one is easier and does the same:

size="$( df -k /usr/local | sed '1d;s/<spc><spc>*/<spc>/g' | cut -f3 -d'<spc>' )"

(replace "<spc>" with literal space characters)
baknin

Replace your working shell to bash or ksh.
bash or ksh is more powerful.

in sh aa=`echo $a`
in bash or ksh you can use aa=$(echo $a) also.
bash support some operations in {}
e.g:
${file#*/}
${file%/*}
...
${file:0:5}

cheers.

Change line 1 from #!/bin/sh to #!/usr/bin/ksh