Re: Odd behaviour when running exec inside a signal handler

On Sun, Jul 25, 2010 at 04:54:53PM -0400, Chet Ramey wrote: > On 7/25/10 8:51 AM, Julien Dessaux wrote: > > I have a script that trap USR1 for reloading purpose. The signal handler > > then does some cleaning, then exec $0. > > With BSD and Posix-style signals, the caught signal is automatical

Re: Odd behaviour when running exec inside a signal handler

On Mon, Jul 26, 2010 at 2:16 PM, Greg Wooledge wrote: > On Sun, Jul 25, 2010 at 04:54:53PM -0400, Chet Ramey wrote: > > On 7/25/10 8:51 AM, Julien Dessaux wrote: > > > I have a script that trap USR1 for reloading purpose. The signal > handler > > > then does some cleaning, then exec $0. > > >

When to use printf instead of echo?

Hi, Although echo is sufficient most of the time, my understanding is that printf may be better for certain situations (for example, formatting the width of a number). The manual doesn't explicitly mention in what situations it is better to use printf than to use echo. I think that this might have

Re: When to use printf instead of echo?

On 07/26/2010 03:27 PM, Peng Yu wrote: > Hi, > > Although echo is sufficient most of the time, my understanding is that > printf may be better for certain situations (for example, formatting > the width of a number). The manual doesn't explicitly mention in what > situations it is better to use pr

RFE -or- Howto?

I don't know if there's an easy way, but if not would you consider an RFE -- Is there a syntax for a mult-var assignment, ala: (a b c d)=(1 2 3 4) results would be: a=1, b=2, c=3, d=4 I know I can get the rval into an array, but can't figure out how to move the array vals to discrete variables

Re: RFE -or- Howto?

On 7/26/10 6:25 PM, Linda Walsh wrote: > I don't know if there's an easy way, but if not would you consider an > RFE -- > > Is there a syntax for a mult-var assignment, ala: > (a b c d)=(1 2 3 4) Yes. read a b c d <<<"1 2 3 4" Chet -- ``The lyf so short, the craft so long to lerne.'' - Chauce

How use a local variable in for loop?

Hi, The variable f keeps the last value when the for loop is finished. Is there a way to declare it as a local variable, so that it disappears after for-loop is finished? (I could unset it, but I want to know if it can be a local variable) $ for f in a b; do echo $f; done a b $ echo $f b -- Reg

Re: How use a local variable in for loop?

On 07/26/2010 07:50 PM, Peng Yu wrote: > Hi, > > The variable f keeps the last value when the for loop is finished. Is > there a way to declare it as a local variable, so that it disappears > after for-loop is finished? (I could unset it, but I want to know if > it can be a local variable) > > $

Strange behavior with job control

Hi, consider the following script: #!/bin/bash sleep 0.5 & if [[ $1 = a ]]; then sleep 5 & else { sleep 5; } & fi PID=$! wait %1 kill $PID ps aux | grep '[s]leep 5' exit 0 When I run this script with parameter "a" I get the following output: ./foo.sh: line 11: 12132 Terminated