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May a named pipe?


Create a named pipe:
mkfifo /tmp/watch_log

Point the tail command to it and background it:
tail -f -n1000 logfile > /tmp/watch_log &

Watch it using the cat command:...

Use an alias.

A symlink has to point to a physical file if you want it to return a file descriptor on open.
So, what you are asking is interesting but does not make sense to me.

Rather than you telling us how...

Or only waiting subprocess ending, very cpu friendly.

#!/bin/ksh or bash or dash or ...

someecho()
{
while true
do
somestring=$(date '+%H%M%S')
printf "\r%s ...

This should get you started. I avoid bash, and have marked the one statement that I know you'll need to change if you wish to use bash over Ksh.


#!/usr/bin/env ksh

# function that does work...

thru sed..
sed -e 's/\(".*"\).*/\1/g' -e 's/ [^ ]*,//' inputfile

awk -F"character|numeric" '{print $1}' file

sed 's/ *\(character\|numeric\).*$//' infileFor sed implementations that don't support alternation:

sed 's/ *character .*//; s/ *numeric.*//' infileAnd of course, you should add other data types...