Hi Jan,
Which part is the mistake, and what is the solution?
Thanks
On Thu, Aug 12, 2010 at 1:46 PM, Jan Schampera wrote:
> Jan Schampera wrote:
>
> 1) Why doesn't this print anything
>>
>> while read -d'' -n1 ch; do
>> echo "$ch"
>> done <<< $'hello\nworld'
>>
>>
>> 2) Why does this print
Jan Schampera wrote:
1) Why doesn't this print anything
while read -d'' -n1 ch; do
echo "$ch"
done <<< $'hello\nworld'
2) Why does this print something, but only up to the hyphen?
while read -d'' -n1 ch; do
echo "$ch"
done <<< $'hello\nwor-ld'
Please ignore this question. 2 minutes af
Hello,
don't ask about the detail how I originally invented this code, but I
stepped over something I really can't explain:
1) Why doesn't this print anything
while read -d'' -n1 ch; do
echo "$ch"
done <<< $'hello\nworld'
2) Why does this print something, but only up to the hyphen?
whil
Configuration Information [Automatically generated, do not change]:
Machine: i486
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i486'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='ba
However, if your pipe is in a command substitution or other subshell,
PIPESTATUS won't be useful. You'll have to use pipefail.
$ set +o pipefail
$ var=$(false | true)
$ declare -p PIPESTATUS# shows the status of the assignment, not the "false"
declare -a PIPESTATUS='([0]="0")'
$ var=$(false |
On 08/11/2010 07:46 AM, Eric Blake wrote:
> On 08/11/2010 05:20 AM, Pierre Gaston wrote:
>> On Wed, Aug 11, 2010 at 2:18 PM, Peng Yu wrote:
>>> Hi,
>>>
>>>
>>> The following example returns the exit status of the last command in a
>>> pipe. I'm wondering if there is a way to inherent non-zero exit
On 08/11/2010 05:20 AM, Pierre Gaston wrote:
> On Wed, Aug 11, 2010 at 2:18 PM, Peng Yu wrote:
>> Hi,
>>
>>
>> The following example returns the exit status of the last command in a
>> pipe. I'm wondering if there is a way to inherent non-zero exit status
>> using pipe. That is, if there is any co
On Wed, Aug 11, 2010 at 2:18 PM, Peng Yu wrote:
> Hi,
>
>
> The following example returns the exit status of the last command in a
> pipe. I'm wondering if there is a way to inherent non-zero exit status
> using pipe. That is, if there is any command in a pipe that return a
> non-zero status, I'd
Hi,
The following example returns the exit status of the last command in a
pipe. I'm wondering if there is a way to inherent non-zero exit status
using pipe. That is, if there is any command in a pipe that return a
non-zero status, I'd like the whole pipe return a non-zero status.
$ cat main.sh
