mostra indirizzo IP
ifconfig
spazio libero nel file system:
df
spazio disponibile:
fs lq
es: fs lq
Volume Name Quota Used %Used Partition
user.roby 310000 243156 78% 0%
per sapere la shell di default:
echo $SHELL
per sapere in quale shell ci troviamo:
echo $0
conta numero di righe, parole e caratteri in un file:
wc filename
lista del contenuto della directory:
ls directory
lista le dimensioni dei file in ordine decrescente:
ls -lSr
lista anche la data di ultima modifica e i file nascosti:
ls -ltra directory
cambia directory:
cd directory
mostra la directory corrente:
pwd
crea directory:
mkdir directory
cancella directory vuota:
rmdir directory
cancella directory con tutti i contenuti:
rm -r directory
copia file:
cp filename1 filename2
cambia nome al file:
mv filename1 filename2
cancella un file:
rm -i filename
stampa il contenuto del file:
cat filename
stampa il contenuto delle ultime 10 linee di un file:
tail filename
sostituisci una stringa
tr 'striga uno' stringa due'
cat filename | tr 'str' 'str2'
cerca un file in tutte le sottodirectory:
find . -name filename
cerca i file con dimensione superiore a 100 kbyte
find . -size +100k
cerca una parola in un file, indipendentemente dalle maiuscole:
grep -wi parola filename
cerca la "stringa" in un file:
grep 'stringa' filename
cerca la "stringa" in tutti i file (comprese sottodirectory):
grep -r 'stringa' .
cerca la "stringa1" or "stringa2":
grep 'stringa1\|stringa2' filename
cerca la "stringa1" and "stringa2":
grep 'stringa1' filename | grep 'stringa2'
cerca le righe che non contengono la "stringa":
grep -v 'stringa' filename
grep help
file viewer:
more filename
file viewer (si possono usare le frecce,
/ per search, q per uscire):
less filename
dorme n secondi prima di continuare:
sleep n
separatore di comandi:
sleep 5; more filename
zip di un file:
gzip filename
unzip di un file:
gunzip filename.gz
crea un file archivio del contenuto di una directory:
tar cvf nomefile.tar directory
spacchetta l'archivio:
tar xvf nomefile.tar
crea file archivio compresso:
tar cvzf nomefile.tgz directory
spacchetta l'archivio compresso:
tar xvzf nomefile.tgz
lista processi:
ps -l
kill del processo n:
kill n
link simbolico:
ln -s filename filenamelink
snapshot del video:
import name.png
display.png
------------------------networking
login remoto:
ssh galilinux.pi.infn.it -lroby
ssh roby@galilinux.pi.infn.it
login remoto enable trusted X11 forwarding and authentication:
ssh -AY robby@lxplus.cern.ch
copia un file in remoto:
scp roby@galilinux.pi.infn.it:public/filename .
copia ricorsivamente una directory in remoto:
scp -r directory roby@galilinux.pi.infn.it:public
test di un nodo remoto:
ping galilinux.pi.infn.it
restituisce l'indirizzo IP di un nodo remoto:
host galilinux.pi.infn.it
nslookup galilinux.pi.infn.it
comando (root) per far ripartire la rete:
/etc/rc.d/init.d/network start
/sbin/service network start
ottiene un ticket per Kerberos:
kinit robby@CERN.CH
------------------install pem certificate in lxplus
Export the p12 certificate from Firefox
Place the p12 certificate file in the .globus directory of your home area.
cd ~/.globus
mv /path/to/mycert.p12 .
Execute the following shell commands:
rm -f usercert.pem
rm -f userkey.pem
openssl pkcs12 -in mycert.p12 -clcerts -nokeys -out usercert.pem
openssl pkcs12 -in mycert.p12 -nocerts -out userkey.pem
chmod 400 userkey.pem
chmod 400 usercert.pem
https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookStartingGrid#ObtainingCert
------------------accounting
crea nuovo account (solo root)
/usr/sbin/adduser login_name
passwd ligon_name
visualizza spazio disponibile:
fs lq
visualizza protezioni afs di una directory:
fs la dir
modifica protezione afs di una directory:
fs sa dir system:anyuser lr
modifica protezione afs per un utente
fs sa /afs/pi.infn.it/www/esperimenti/cms/pixel username rlidwka
check di un filesystem
fsck /dev/sda1
------------------LSF submit a job
chmod 777 jobname
bsub -q 8nh -o outputfile jobname -> submit in the queue 8nh
bsub -B jobname -> send an email at starting job
bsub -N jobname -> send an email at the end of job
bqueues -> show the queues
bjobs -> show the running jobs
bpeek -> show the output
bkill jobid -> kill a job
Quick Reference
Note: Not all command options are presented here. For a complete list of options, see the appropriate man pages.
See the status of all queues:
bqueues [options] [queue_name]
-l Long format
See the status of submitted jobs:
bjobs [options] [jobid]
-a Report about all jobs, regardless of status
-d Report about recently finished jobs only
-p Report about pending jobs only
-s Report about suspended jobs only
-r Report about running jobs only
-q queue Report about jobs submitted to a particular queue only
-u user Report about jobs owned by a particular user only
jobid Report about a particular submitted job only
Submit a job:
bsub [options] command [args]
-q queue Submit to a particular queue, rather than the default
-o file Send job ouput to the named file
[args] Options for the submitted job
See the history of a submitted job:
bhist [options] [jobid]
-l Long format
-a Report about finished and unfinished jobs
-d Report about finished jobs only
-p Report about pending jobs only
-r Report about running jobs only
-s Report about suspended jobs only
-q queue Report about jobs submitted to a particular queue only
-u user Report about jobs submitted by a particular user only
jobid Numeric identifier as reported by bsub
See the output from an unfinished job:
bpeek jobid
jobid Numeric identifier as reported by bsub
Switch a submitted job to another queue:
bswitch destQ jobid
destQ Queue the already submitted job will be switched to
jobid Numeric identifier as reported by bsub
Kill a submitted job:
bkill jobid
jobid Numeric identifier as reported by bsub
Suspend a submitted job:
bstop jobid
jobid Numeric identifier as reported by bsub
Resume a user-suspended job:
bresume jobid
jobid Numeric identifier as reported by bsub