Non classé, Rappel

Rappel linux

Canaux

stdin 0
stdout 1
stderr 2
>& redirige les 2 canaux de sortie dans un seule fichier

cmd 2>error.log
ls -l >resultat.txt 2>&1

exec ouverture des canaux 3 a 9
exec 3>dump.log
ls -l >&3
tout redirection dans canal 3 sera ecrit dans fichier dump.log

exec 3>&-
fermeture  du canal

—————————————————————————-

!! //Rappel de la dernière commande
!23 //La 23ème commande
!-2 //L'avant-dernière commande
!?profile //La dernière commande contenant le mot "profile"

—————————————————————————————

6 consoles virtuelles, dont l’accès depuis l’interface graphique se fait avec les combinaisons de touches suivantes Ctrl+ALT+Fn ou
n est un chiffre de 1 à 6.

Depuis une console virtuelle, vous pouvez passer dans une autre avec la combinaison ALT+Fn, (avec n de 1 à 6).
Pour revenir en mode graphique depuis une console virtuelle, faites ALT+F7.
————————————————————————————–

Make :
Error 127 means one of two things:

  1. file not found: the path you’re using is incorrect. double check that the program is actually in your $PATH, or in this case, the relative path is correct — remember that the current working directory for a random terminal might not be the same for the IDE you’re using. it might be better to just use an absolute path instead.
  2. ldso is not found: you’re using a pre-compiled binary and it wants an interpreter that isn’t on your system. maybe you’re using an x86_64 (64-bit) distro, but the prebuilt is for x86 (32-bit). you can determine whether this is the answer by opening a terminal and attempting to execute it directly. or by running file -L on /bin/sh (to get your default/native format) and on the compiler itself (to see what format it is).

if the problem is (2), then you can solve it in a few diff ways:

  1. get a better binary. talk to the vendor that gave you the toolchain and ask them for one that doesn’t suck.
  2. see if your distro can install the multilib set of files. most x86_64 64-bit distros allow you to install x86 32-bit libraries in parallel.
  3. build your own cross-compiler using something like crosstool-ng.
  4. you could switch between an x86_64 & x86 install, but that seems a bit drastic ;).