Skriptimine 2017

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Linuxi käsud

Käsk Funktsioon Man link Näidis
cd Change Directory http://www.skrenta.com/rt/man/cd.1.html cd /var/log
ls list directory contents http://www.skrenta.com/rt/man/ls.1.html ls -lah /var/log
ps report process status http://www.skrenta.com/rt/man/ps.1.html ps -ef
grep print lines matching a pattern http://www.skrenta.com/rt/man/grep.1.html grep -R 'error' /var/log/*
tail output the last parts of file http://www.skrenta.com/rt/man/tail.1.html tail -f /var/log/syslog
cat concatenate files and print on the standard output http://www.skrenta.com/rt/man/cat.1.html cat /var/log/syslog
man format and display the on-line manual pages http://www.skrenta.com/rt/man/man.1.html man man
su run a shell with substitute user and group IDs http://www.skrenta.com/rt/man/su.1.html su - root
cp copy files and directories http://www.skrenta.com/rt/man/cp.1.html cp /var/log/syslog /tmp/tmp_syslog
mv move (rename) files/directories http://www.skrenta.com/rt/man/mv.1.html mv /var/log/syslog.5 /arhiiv
rm remove files or directories http://www.skrenta.com/rt/man/rm.1.html rm /tmp/tmp_syslog
sed Stream editor http://www.skrenta.com/rt/man/sed.1.html sed -ie 's/mida/millega/g' /tmp/tmp_syslog
mkdir make directories http://www.skrenta.com/rt/man/mkdir.1.html mkdir /tmp/skript
chmod change file access premissions http://www.skrenta.com/rt/man/chmod.1.html chmod 700 /tmp/skript/myscript.sh
chown change file owner or group http://www.skrenta.com/rt/man/chown.1.html chown student:student /tmp/skript/myscript.sh
chgrp Change group ownership http://www.skrenta.com/rt/man/chgrp.1.html chgrp root /tmp/skript/myscript.sh
whoami print effective userID http://www.skrenta.com/rt/man/whoami.1.html whoami
pwd print name of current/working directory http://www.skrenta.com/rt/man/pwd.1.html pwd
awk pattern scanning and processing language http://www.skrenta.com/rt/man/awk.1.html Echo one two | awk ‘{print $1}’
find search for files in a directory hierarchy http://www.skrenta.com/rt/man/find.1.html find / -name passwd
cut remove sections from each line of files http://www.skrenta.com/rt/man/cut.1.html http://www.thegeekstuff.com/2013/06/cut-command-examples
sort sort lines of text files http://www.skrenta.com/rt/man/sort.1.html ls -la /var/log | sort -k5 -n
bc An arbitrary precision calculator language http://www.skrenta.com/rt/man/bc.1.html echo 5+5 | bc

Bash-i info

If lause moodustamine

if [ Funktsioon ] then
tee midagi
fi
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html

Debug mode

bash -x /skripti/path.sh

Exit koodid

Viimase käivitatud käsu exit koodi leiate muutujast $?
Juhul kui käsk õnnestus on exitkood 0
Juhul kui käsu käivitamisel tekkis tõrke on exit kood 0'ist erinev

Sisendi lugemine

read muutujanimi
read -p "tekst" muutujanimi

Bash tsüklid

https://www.cyberciti.biz/faq/bash-for-loop/