Shellprogrammierung (Linux)

Allgemein

Hilfe zu eingebauten Kommandos: help <command>

Hilfe zu externen Kommandos: man <command>

Status bei Pipes

Dazu kann die Bash-Variable PIPESTATUS

test ${PIPESTATUS[0]} -eq 0

Links

https://stackoverflow.com/questions/1221833/pipe-output-and-capture-exit-status-in-bash

Testscripte

getops

#!/bin/bash

while getopts "l:m" OPTION &>/dev/null
do
  case "$OPTION" in
    l) echo "Option l with argument $OPTARG";;
    m) echo "Option m without argument";;
    *) echo "Wrong option $OPTION";;
  esac
done

# OPTIND contains the next argument
shift `expr ${OPTIND} - 1`

# alternative:
# shift "$((OPTIND-1))"

echo "command = `basename $0`, first argument = $1"

Links

http://openbook.rheinwerk-verlag.de/shell_programmierung/shell_005_007.htm

Fortschrittsanzeige

Datei:Cursor.sh

Dialog

Links

https://askubuntu.com/questions/1705/how-can-i-create-a-select-menu-in-a-shell-script

Syntax checken

bash -vn script.sh

https://www.tecmint.com/check-syntax-in-shell-script/

Links

http://wiki.bash-hackers.org/commands/classictest

http://linuxint.com/DOCS/Linux_Docs/openbook_shell/index.htm

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