Re: Advanced Korn Question

From: Ron Rogers <RROGERS_at_galottery.org>
Date: Tue, 13 Mar 2001 10:40:48 -0800
Message-ID: <F001.002CB3D6.20010313104727@fatcity.com>

David,
 I think it is because of the ksh b.ksh you execute. The ksh is looking for some place to direct the output to and you supply that with the 2>&1 command. I am only quessing that is the answer because it has been awhile since I used Unix. ROR mª¿ªm
>>> david.hill_at_lechateau.ca 03/13/01 11:21AM >>>
I was hoping someone in the list might be able to help me understand why this happens.

i have a script a.ksh that looks like this a.ksh

---

ksh b.ksh

---

b.ksh

---

su - updater -c "/prod/exe/pos2100" 2>&1 $log1 &
su - updater -c "/prod/exe/pos2100" 2>&1 $log2 &
su - updater -c "/prod/exe/pos2100" 2>&1 $log3 &
su - updater -c "/prod/exe/pos2100" 2>&1 $log4 &

wait

---

when i run this only 1 of the background runs and the other 3 hang

but if i change a.ksh to this

---

ksh b.ksh 2>&1 /dev/null

---

everything works ok and all 4 jobs go into background and run fine

coudl someone tell me why this happens

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Author: david hill
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Author: Ron Rogers
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Received on Tue Mar 13 2001 - 12:40:48 CST