bash - Redirect stdin to stdout while waiting for background process -


i have following code:

cmd cmd_args & wait_pid=$!  trap "kill -s sigterm $wait_pid" sigterm sigint sigkill  wait $wait_pid

with want able kill background process whenever tries kill script. however, still want stdin redirected background process, not happening.

i grab wait's stdin , redirect background process. that, i've tried:

wait $wait_pid 0>&1 1> named_pipe

but without luck.

as mentioned, can't trap sigkill (or sigstop).

other that, try this:

#!/bin/bash cmd cmd_args <&0 & wait_pid=$! trap "kill -s sigterm $wait_pid" sigterm sigint wait $wait_pid

the <&0 tell bash want cmd's stdin script's stdin.

slightly off topic, interesting method of dumping bytes running process' stdin send them directly it's /proc file descriptor, in:

echo "stuff send process" >/proc/$wait_pid/fd/0

Comments

Post a Comment

Popular posts from this blog

How to mention the localhost in android -

i trying call localhost in android application. unfortunately not possible used several methods emulator local host http://10.0.2.2/android/dbconnection.php and network ip address http://192.168.1.xx/android/dbconnection.php also http://localhost:8080/android/dbconnection.php but nothing connected localhost. purpose refer stackoverflow answers not working i facing same problem when worked on localhost. referred stackoverflow answer got solution create new emulator works fine in new emulator.
Read more

php - Calling a template part from a post -

i include iframe within post in wordpress. located inside content of post, meaning cannot in post template file, otherwise either before or after. i'd add facebook plugin within posts: <div id="socialwrap"><div class="fb-like" data-href="http://onlinearizonahomes.info" data-send="true" data-width="450" data-show-faces="true" data-font="arial"></div></div> i thinking of calling template part within post <?php get_template_part( 'social' ); ?> cannot use php within post without plugin (i'd avoid using plugin this). an alternative using javascript create html in post, seems unnecessary use of javascript. what best way add html within wordpress post? you can use shortcode. add functions.php function cudjex_fbshare( $atts, $content = null ) { global $post; $link = get_permalink($post->id); return '<div id="socialwrap...
Read more

c# - String.format() DateTime With Arabic culture -

check below code snippet, namespace testdateconvertion { class program { static void main(string[] args) { datetime testvalue = new datetime(2013, 12, 15, 15, 33, 44); cultureinfo culture = new cultureinfo("ar-sa"); string stringvalue = string.format(culture, "{0:d} {0:hh:mm:ss}", testvalue); console.writeline(stringvalue); console.readline(); } } } it gives output 22/02/35 15:33:44 i not getting how possible. whats 35 doing in output there that's 13/12/2015 in hijri, 35 means 1435 in hijri, default date format saudi arabia.
Read more