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Should you insist on sed:sed 's/ / 25 /;s/ \|$/:/g' file
hostname:25:id:password:
.
.
.

Anyhow, try awk '($2="25" OFS $2) && $NF=$NF OFS' OFS=":" file
hostname:25:id:password:
hostname:25:id:password:
hostname:25:id:password:
hostname:25:id:password:

in a file named like scr.sh try something like:
#!/bin/bash

while read ip
do
if [ -n "$ip" ]
then
while read user pass
do
CMD=`ps -eaf | grep -c mysql`
...

Run it without the stdin redirection, and then enter the limits on the command line. As given, it is made for reading from a file so it doesn't prompt.
./iprange
64.0.0.1 74.255.255.255
Please be...

Given your IP range spans byte boundaries (like 10.1.1.251, 10.1.2.5), this might be of some interest:while IFS=", " read IP1 IP2
do BIP1=$((0x$(printf "%02X" ${IP1//./ })));
...

Hi,
Second 'if" is not close (fi is missing).

Regards.

What's the value of the parameter inet_interfaces in /etc/postfix/main.cf? Run one of the following commands to find that out:
$ grep ^inet_interfaces /etc/postfix/main.cfor (even better)
#...

You will need to confirm where you are running these two commands. Is 104.200.16.232 the server that you run the 2nd command on?

Other questions that spring to mind:-
What OS and version do you...

Try:
if (preg_match('/^109\.101\.[^.]+\./', $_SERVER['REMOTE_ADDR'])) .....

EDIT: or simpler, try:
if (preg_match('/^109\.101\./', $_SERVER['REMOTE_ADDR'])) .....

Not real good with JavaScript, but I'd probably try something like:

function checkform ( form )
{
if (form.pass.value.length < 6 || !form.pass.value.match("^\\d{3}") ) {
alert(...

Try:
awk -F@ '{print $1}' file
sed 's/@.*//' file
cut -d@ -f1 file
grep -Eo '^[^@]+' file

#!/bin/bash
for c in {1..1000}
do
printf "http://upload.com/%d/%d.txt\n" $c $c
done

If it IS a list --
meaning the output is on a single line for each email:
awk '/\.ca$/' filename > newfilename

If I were to rephrase your question, you want to keep at most one entry for each C class.

We could try awk for this:

awk -F. '!class[$1,$2,$3] { print $0; class[$1,$2,$3]=1; }'

Try with this ..

for ip in $(cat ip_file)
do
while read USR PAS
do
perl x.pl $ip $USR $PAS
done < user_password_file
done

In that case,

i=1
while [ $i -le 100 ]
do
mkdir $i.example.com
cp -pr example $i.example.com # recursively copies all the files and contents
i=`expr $i + 1`
echo " created $i.example.com...

tr ' ' ':' < input > /tmp/$$
# You should check the contents of /tmp/$$ before overwriting 'input' with it
cat /tmp/$$ > input
rm /tmp/$$

sed 's/ /:/g' myFile

Sorry :) I missed this important detail:

awk -F: '{
print $3, $1, $2
}' OFS=/ infile