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Hi,

You have some syntax errors, we wont use '$' prefix for variables unless thats a system variable in awk(like $0,$1...).


for (i=0; i< ${#TATAMSC[@]}; i++ ) if(substr($1,184,4)=...

The shutdown command is machine-specific. They usually use thewall command.
man wall
man write
The messages from wall or write still mess up the display on the receiving terminals.

We use email...

To answer the question in post #1.
It is not possible for a background task to type input on the foreground keyboard.
It is not normal to create a background process which outputs to a terminal -...

What's happend to the "/tmp/" before af.out ?

Please note that while posting, you might want to post your environment like the U*IX variant you are using and also the shell you are using.

Assuming, you are using POSIX compliant shell like...

You don't. It is not needed or desirable to put the command into an Environment Variable (like $cmd in your script).
Your whole script should be just:

#!/bin/bash
cd /
find . -type f -name...

A smart DHCP client is paranoid and doesn't trust the values its given. It checks if they're occupied, first. (run dhcpcd manually, it'll even tell you it's doing so...)

Which is why a process...

Usually it doesn't, it just fills in filenames or command names.

You can find it in man bash under 'Programmable Completion', but looks very complex.

A more hands-on tutorial is here...

Hi,

Try this one with your new requirement.

You have to store the below code in check.awk file.

check.awk

#! /usr/bin/awk
{
f1[$3]=1;
f2[$2]=1;
if(chk1[$1]...

Truly I find that stupid...
If you were to limit root access (very good, we all do that...) start by allowing root connection to console only ( Yes only one! ), then users entitled to use root...

Giving double square brackets is not wrong, the if statement would do the regular test. For more information read link1 (https://www.unix.com/302076732-post.html#post302076732)and link2...

Hi,

Try this one,


awk '{f1[$3]++;f2[$2]++;a[$3"^"$2]++;}END{ORS="";print " ";for(j in f2){print j" ";c++;if(c>5){print " ";}}print "\n";for(i in f1){print i;for(k in...

You've added a route without specifying a gateway for it. For the route to work, you'd need to add a gateway parameter too using the gw switch. Also you've set a class C address up as a Class B one,...

-i option in sudo acts similar to "su - username" or login. It changes the environment to that of the user in question. So the UID and EUID will be that of the user you are trying to sudo to...

Looks like you have some kind of problem there. I tested this fully on my RHEL 6.2 box. It's working perfectly. Copying /usr/bin/passwd to another directory and executing does not even work in my...

Linux ubuntu 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Hi Folks,

Please help me. I am bit struck here.

Here is the OS info.
Linux ubuntu...

exec "$cmd"

sysctl doesn't have a giant list of everything it's allowed to change in the kernel. All it does is trawl the entire /proc/sys folder looking for things to print.

That item in particular:

$ ls...

Hi guys,

I need help in making a command to find some data.

I have multiple files in which multiple records are present.. Each record is separated with a carriage return and in each record...

Yes but the lines that ls -l produces do not start with 'u'

Some errors noted upon casual inspection:

find is missing the path argument. The pattern argument to the -name primary must be protected from shell expansion.

Also, there's a colon where a...

echo "abc" | tr '[:lower:]' '[:upper:]'
ABC

But the best solution in my opinion is still to use the "typeset -u" way mentionned in my first post

$ echo "abc" | awk '{print toupper($0)}'
ABC

Does this do it for you:


ps -elf|sort -k 4nr,4


The S means that it is interruptible (waiting for an event to complete). The ps man page probably lists all of them.

Hi Vijay, this is called parameter expansion (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02).