Terminal Hungup at the time of read

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Terminal Hungup at the time of read
# 1  
Old 11-30-2001
Question Terminal Hungup at the time of read


There are two scripts. The second script is called from the first one. These will create two processes on unix. In the second script, there is a read statement in the while loop.

Under unexpected conditions, at the time of reading response from the user, if the terminal hungup happens, the subprocess is still running because of the loop. I need to stop the
subprocess if the terminal hungup happens.
I tried using trap , but it didn't work.
Any help will be greatly appreciated ? Looking for quick response.

# 2  
Old 11-30-2001
[my lamer solution] in the second script, test in the loop whether ps list inclide Parent PID -

$PPID in the korn shell

$$ in the csh
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Help with Bash piped while-read and a read user input at the same time

Hi I am new to writing script and want to use a Bash Piped while-read and read from user input. if something happens on server.log then do while loop or if something happend on user input then do while loop. Pseudocode something like: tail -n 3 -f server.log | while read serverline || read... (8 Replies)
Discussion started by: MyMorris
8 Replies

2. OS X (Apple)

Read and manage mail under Terminal

When opening Terminal window under Mac OS Lion, I have a message saying I've got mail . It seems to be somewhere close to ~/Library/Server/Mail/Data/spool/ but I ignore what command to be typed in order to read it and suppress it later once read. (1 Reply)
Discussion started by: shub22
1 Replies

3. UNIX for Dummies Questions & Answers

read from terminal/keyboard > /dev/tty

Hi, I need to provide more than one character to "> /dev/tty" through terminal/keyboard input, I have this: ok=false while do echo " Enter r1 to reformat " > /dev/tty read choice case $choice in ) echo " bla bla bla " ;; done However, in this way,... (3 Replies)
Discussion started by: Gery
3 Replies

4. UNIX for Dummies Questions & Answers

read a .bin through terminal and output a checksum?

Hi all, Ive been given a .bin file that I want to do a checksum on to make sure that it is consistant with what I know should be the checksum. I have tried using md5sum but it spits out a 128 bit line rather than a 32 bit line, which is what I want. Can someone help set me off in the right... (7 Replies)
Discussion started by: TeamUSA
7 Replies

5. Programming

How to read terminal attributes using ioctl()

I want to get the terminal attributes such as , terminal width terminal height current cursor position Can I use ioctl function. Please help me how to use this function to get these details.. If possible please explain with a sample code. I'm very new to UNIX progrmming.... Thanks... (1 Reply)
Discussion started by: Sreejesh.S
1 Replies

6. Shell Programming and Scripting

date and time to display on the terminal

hi all, am trying to 'grep' some text from a log file and use the 'cut' command to read from that line i just grep'ed to extract date/time and response times. code sniplet i am using is : grep -i 'text to grep' Out.log | while read LINE; do ... (11 Replies)
Discussion started by: cesarNZ
11 Replies

7. Programming

read terminal command

hi how to read terminal command, just i want to read all command which write on terminal so please tell me any system call, api avilable in c for above purpose (6 Replies)
Discussion started by: munnu
6 Replies

8. UNIX for Dummies Questions & Answers

How to read lock terminal values in solaris

Hi all I am using sun solaris 5.8. I wanna know where the value stored if we lock/unlock the terminal and how i can read and use it to my script. I am helpless . So plzzzzzz... (0 Replies)
Discussion started by: pankajarora_12
0 Replies

9. Shell Programming and Scripting

read from terminal

If I do: cat file | write user I can cat a file to a users terminal. My question is, how can this user read the input and cat it into a file? I tried the reverse: read | file or read > file etc. But it didn't work. (1 Reply)
Discussion started by: rein
1 Replies

10. UNIX for Dummies Questions & Answers

Output to terminal and file at the same time

Hi all The makefile of a large project produces hundreds of lines of output, which I can't look at any more when the build is finished. If I simply redirect the output to a file, I can't see the progress of the building process... Is there a possibility to redirect the output to a file and at... (1 Reply)
Discussion started by: Charlie
1 Replies
Login or Register to Ask a Question