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Commit 2bf554c0 authored by Peter Gerwinski's avatar Peter Gerwinski
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Screenshots und Beispiele 12.10.2022

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cassini/home/peter/bo/2022ws/es/20221012> host m31.gerwinski.de
m31.gerwinski.de has address 88.198.170.60
m31.gerwinski.de mail is handled by 10 mx2.gerwinski.de.
cassini/home/peter/bo/2022ws/es/20221012> nc 88.198.170.60 25
220 mx1.gerwinski.de ESMTP Exim 4.94.2 Wed, 12 Oct 2022 15:34:28 +0200
HELO cassini
250 mx1.gerwinski.de Hello cassini [195.37.15.85]
MAIL FROM: Elon Musk <musk@example.com>
250 OK
RCPT TO: Peter Gerwinski <peter@gerwinski.de>
250 Accepted
From: Steve Jobs <jobs@example.com>
500 unrecognized command
DATA
354 Enter message, ending with "." on a line by itself
From: Steve Jobs <jobs@example.com>
To: Bill Gates <gates@example.com>
Subject: Hi! B-)
Hi, Bill. How are you?
Greetings,
S.
.
250 OK id=1oibti-006flc-5o
QUIT
221 mx1.gerwinski.de closing connection
cassini/home/peter/bo/2022ws/es/20221012>
cassini/home/peter/bo/2022ws/es/20221012> grep '".*"' test.html
<img src="quadrocopter.jpg"/>
cassini/home/peter/bo/2022ws/es/20221012> grep -o '".*"' test.html
"quadrocopter.jpg"
cassini/home/peter/bo/2022ws/es/20221012> grep -o '".*"' test.html | sed -e 's/"//g'
quadrocopter.jpg
cassini/home/peter/bo/2022ws/es/20221012>
<html>
<h1>Ein Quadrocopter!</h1>
<img alt="Foto: Quadrocopter" src="quadrocopter.jpg"/>
</html>
cassini/home/peter/bo/2022ws/es/20221012> grep -o '".*"' test-02.html | sed -e 's/"//g'
Foto: Quadrocopter src=quadrocopter.jpg
cassini/home/peter/bo/2022ws/es/20221012> grep -o '".*"' test-02.html
"Foto: Quadrocopter" src="quadrocopter.jpg"
cassini/home/peter/bo/2022ws/es/20221012> grep -o '<img.*src=".*"' test-02.html
<img alt="Foto: Quadrocopter" src="quadrocopter.jpg"
cassini/home/peter/bo/2022ws/es/20221012> grep -o '<img.*src=".*"' test-02.html | sed -e 's/^.*src=".*".*$/bla/'
bla
cassini/home/peter/bo/2022ws/es/20221012> grep -o '<img.*src=".*"' test-02.html | sed -e 's/^.*src="\(.*\)".*$/\1/'
quadrocopter.jpg
cassini/home/peter/bo/2022ws/es/20221012>
#include <stdio.h>
int main (void)
{
printf ("Hello, world!\n");
return 0;
}
#include <stdio.h>
int main (void)
{
printf ("Hello, world!\n");
return 1;
}
cassini/home/peter/bo/2022ws/es/20221012> cat hello-01.c
#include <stdio.h>
int main (void)
{
printf ("Hello, world!\n");
return 0;
}
cassini/home/peter/bo/2022ws/es/20221012> ./hello-01
Hello, world!
cassini/home/peter/bo/2022ws/es/20221012> echo $?
0
cassini/home/peter/bo/2022ws/es/20221012> cat hello-02.c
#include <stdio.h>
int main (void)
{
printf ("Hello, world!\n");
return 1;
}
cassini/home/peter/bo/2022ws/es/20221012> ./hello-02
Hello, world!
cassini/home/peter/bo/2022ws/es/20221012> echo $?
1
cassini/home/peter/bo/2022ws/es/20221012>
cassini/home/peter/bo/2022ws/es/20221012> if ./hello-01; then echo "Erfolg!"; else echo "Leider verloren."; fi
Hello, world!
Erfolg!
cassini/home/peter/bo/2022ws/es/20221012> if ./hello-02; then echo "Erfolg!"; else echo "Leider verloren."; fi
Hello, world!
Leider verloren.
cassini/home/peter/bo/2022ws/es/20221012>
cassini/home/peter/bo/2022ws/es/20221012> true
cassini/home/peter/bo/2022ws/es/20221012> false
cassini/home/peter/bo/2022ws/es/20221012> which true
/bin/true
cassini/home/peter/bo/2022ws/es/20221012> which false
/bin/false
cassini/home/peter/bo/2022ws/es/20221012> bedingung=true
cassini/home/peter/bo/2022ws/es/20221012> if $bedingung; then echo "Ja."; else echo "Nein."; fi
Ja.
cassini/home/peter/bo/2022ws/es/20221012> bedingung=false
cassini/home/peter/bo/2022ws/es/20221012> if $bedingung; then echo "Ja."; else echo "Nein."; fi
Nein.
cassini/home/peter/bo/2022ws/es/20221012>
cassini/home/peter/bo/2022ws/es/20221012> true
cassini/home/peter/bo/2022ws/es/20221012> echo $?
0
cassini/home/peter/bo/2022ws/es/20221012> false
cassini/home/peter/bo/2022ws/es/20221012> echo $?
1
cassini/home/peter/bo/2022ws/es/20221012>
cassini/home/peter/bo/2022ws/es> echo "2^50" | bc
1125899906842624
cassini/home/peter/bo/2022ws/es> cat test-02.html | grep -o '<img.*src=".*"' | sed -e 's/^.*src="\(.*\)".*$/\1/'
cat: test-02.html: Datei oder Verzeichnis nicht gefunden
cassini/home/peter/bo/2022ws/es> cd 20221012/
cassini/home/peter/bo/2022ws/es/20221012> cat test-02.html | grep -o '<img.*src=".*"' | sed -e 's/^.*src="\(.*\)".*$/\1/'
quadrocopter.jpg
cassini/home/peter/bo/2022ws/es/20221012> cat $(find . -name "*.html") | grep -o '<img.*src=".*"' | sed -e 's/^.*src="\(.*\)".*$/\1/'
quadrocopter.jpg
quadrocopter.jpg
cassini/home/peter/bo/2022ws/es/20221012>
../common/quadrocopter.jpg
\ No newline at end of file
<html>
<h1>Ein Quadrocopter!</h1>
<img src="quadrocopter.jpg"/>
</html>
<html>
<h1>Ein Quadrocopter!</h1>
<img alt="Foto: Quadrocopter" src="quadrocopter.jpg"/>
</html>
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