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Hello Siba,

the kernel will automatically release the cached memory, if available. If java reports an error, perhaps you didn't start the Virtual Machine with the appropriate parameters?

If I...

Again, while this command works, you only revert the linux philosophy: "idle memory is a waste". Linux puts your unused-memory to use, why would you undo that?

Wait will only wait on active child processes. Dead processes (or terminated, or non-existant) will not be waited for.

Use the $? variable right behind the "perl" command to store the returncode of the perl-process. Store it in another variable and do an if later?

expr index "$a" .

Will check if the variable a contains a .

man expr

to learn more.

Cache memory is just some nix-trix: instead of "not using" memory your system doesn't need, it will use the memory to "cache data". When an application requests more memory, the kernel will free the...

1/ it's most probable that s93366 is right: the memory is not "going away", it's being cached. It will be deducted from the "free", will be added to the "used", it will be in "cached" columns.

2/...

I'll even write it in perl for him if he can convince me it's not homework. But you learn a lot more from trying yourself (and having your mistakes corrected) than reading other peoples code.
...

Are you posting homework assignments? Why do you need different random numbers from 1 to 18?

There are 2 ways:

1/ keep generating random numbers, reject the ones you already have (use a hash...

(radoulov was faster, shorter and probably better. Code below uses same principle, but very verbose.)

This program should do it (very verbose)


@a = qw/a c b a b d/;
%b = {};
@c = ();...

#!/bin/sh

var='today--RSS_URL=http://someurl'

x1=`echo $var | sed "s_\(.*\)--\(.*\)=\(.*\)_\1_"`
x2=`echo $var | sed "s_\(.*\)--\(.*\)=\(.*\)_\2_"`
x3=`echo $var | sed...

echo "today--RSS_URL=http://someurl" | sed 's/\(.*\)--\(.*\)=\(.*\)/x1=\1\nx2=\2\nx3=\3/'
x1=today
x2=RSS_URL
x3=http://someurl

Jims answer will work. If you want the exitcode to be 99, just add the instruction "exit 99" where you want it.

Or, even easier,

echo "ECR/CHQ/GBP/12345.out" | cut -d'/' -f1,2,3

The rules clearly state no posting homework assignment... why can't you use "diff"? It's made for this thing.

sed -n '/xxx/,/xxx/p' <tst.txt

Will find from the first xxx to the second,
from the third to the fourth,
etc...

If you already know and have the .jcf files, why not just write a shell script that executes the commands one after another? Am I missing something?

Just open a file, write the commands on...

You can use tput to "draw" ascii to the screen. man tput.

First of all, just "mkdir -p /var/opt/temip/GP_Int/GPTTS/AUTO" should work. The -p switch will suppress errors if the dirs exist and create the parents.

Reply if you need more help. You confused...

First of all, you'll want the "ssh" command to return. So you add the ampersand to the ssh command, not (only) the sleep command.

Second problem: as the ssh returns, the remote server might...