[OT] bash redirection

[Nick Dempelis]

Christos Ricudis wrote:
> On Tue, 23 Mar 2004 20:15:23 +0200
> Nick Dempelis <dempelis at ceid.upatras.gr> wrote:
> 
> 
>>exw ena bash shell script to opoio xontrika kanei:
>>echo 'mpe'
>>a.out
>>
>>opou a.out einai ena programma pou tipwnei sto stdout.
>>
>>sto linux ola douleuoun kanonika
>>alla se SunOS 5.7 (4x sparc CPUS)
>>to redirection den douleuei
>>px. shellscript > xxx.txt
>>to xxx.txt periexei mono to output tou echo (diladi mpe)
>>episis oute to | douleuei px. se commands tis morfis
>>shellscript | tee mpa.txt
>>epipleon oute sto nohup.out periexei auto pou 8elw (kai to mpe kai tin
>>e3odo tou a.out) otan trexw nohup shellscript
> 
> 
> Eisai APOLYTWS SIGOUROS oti to a.out sou trexei? :P 
> 
> Remember oti se polles periptwseis to $PATH DEN periexei thn teleia (dhladh to current working dir). 
> 
>  
> $ cat > lala.c
> #include <stdio.h>
> main () {printf("...ki allo tou kanthlanafth!\n");}
> $ cc lala.c
> "lala.c", line 2: warning: old-style declaration or incorrect type for: main
> $ cat > lala.sh
> echo "Allo to pouli tou nayth..."
> a.out
> $ chmod gou+x lala.sh
> $ ./lala.sh > blabla
> ./lala.sh: a.out: not found
> $ cat blabla
> Allo to pouli tou nayth...
> $ PATH=$PATH:.
> $ export PATH
> $ ./lala.sh > tralala
> $ cat tralala
> Allo to pouli tou nayth...
> ...ki allo tou kanthlanafth!
> $
Euxaristw gia tin grigori apantisi. Eimai 99.9999% sigouros oti trexei 
giati sto "kanoniko" scriptaki einai ./a.out kai otan to trexw xwris 
redirection emfanizetai to output tou a.out ( ...ki allo tou 
kanthlanafth :).Epipleon to a.out emfanizetai kai stin e3odo tis ps (se 
oles tis periptwseis redirection or not). Otan ginetai to redirection 
den pairnw tin e3odo tou a.out.


> 
> 
>>Exei sinantisei kanei paromoia simperifora? Yparxei lisi?
>>
>>euxaristw
>>
>>
>>
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> 

Die evil redirection Dieeeeeee!!!!!!