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  1. 2
      index-lab.adoc
  2. 6
      index-lab.adoc.html
  3. 488
      index-lab.adoc.pdf
  4. 84
      labs/ls/heredocs_ls.adoc

2
index-lab.adoc
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@ -71,7 +71,7 @@ TIP: Absolute basics
=== http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/array-1_ls.adoc.html[Bash - Associative array examples^] === http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/array-1_ls.adoc.html[Bash - Associative array examples^]
=== http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html[Bash - variable indirect expansion^] === http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html[Bash - Heredocs, Positional Parameters^]
:hardbreaks: :hardbreaks:

6
index-lab.adoc.html
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@ -465,7 +465,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
<li><a href="#_the_proc_filesystem">2.2. The proc filesystem</a></li> <li><a href="#_the_proc_filesystem">2.2. The proc filesystem</a></li>
<li><a href="#_vim_a_simple_workflow_example_with_the_vim_editor">2.3. VIM - A simple workflow example with the vim editor</a></li> <li><a href="#_vim_a_simple_workflow_example_with_the_vim_editor">2.3. VIM - A simple workflow example with the vim editor</a></li>
<li><a href="#_bash_associative_array_examples">2.4. Bash - Associative array examples</a></li> <li><a href="#_bash_associative_array_examples">2.4. Bash - Associative array examples</a></li>
<li><a href="#_bash_variable_indirect_expansion">2.5. Bash - variable indirect expansion</a></li> <li><a href="#_bash_heredocs_positional_parameters">2.5. Bash - Heredocs, Positional Parameters</a></li>
</ul> </ul>
</li> </li>
<li><a href="#_internet_of_things_iot">3. Internet of things (IoT)</a> <li><a href="#_internet_of_things_iot">3. Internet of things (IoT)</a>
@ -587,7 +587,7 @@ Absolute basics
</div> </div>
<div class="sect2"> <div class="sect2">
<h3 id="_bash_variable_indirect_expansion">2.5. <a href="http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html" target="_blank" rel="noopener">Bash - variable indirect expansion</a></h3> <h3 id="_bash_heredocs_positional_parameters">2.5. <a href="http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html" target="_blank" rel="noopener">Bash - Heredocs, Positional Parameters</a></h3>
<div class="paragraph"> <div class="paragraph">
<p><br> <p><br>
<br> <br>
@ -921,7 +921,7 @@ This tutorial demonstrates some common <strong>nmap</strong> port scanning scena
</div> </div>
<div id="footer"> <div id="footer">
<div id="footer-text"> <div id="footer-text">
Last updated 2020-11-30 22:42:40 UTC Last updated 2020-11-30 23:05:42 UTC
</div> </div>
</div> </div>
</body> </body>

488
index-lab.adoc.pdf
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@ -6,8 +6,8 @@
/Keywords (iot, swarm, Linux, OS, Sec) /Keywords (iot, swarm, Linux, OS, Sec)
/Creator (Asciidoctor PDF 1.5.0.beta.5, based on Prawn 2.2.2) /Creator (Asciidoctor PDF 1.5.0.beta.5, based on Prawn 2.2.2)
/Producer (Apostolos rootApostolos@swarmlab.io) /Producer (Apostolos rootApostolos@swarmlab.io)
/ModDate (D:20201130224240+00'00') /ModDate (D:20201130230542+00'00')
/CreationDate (D:20201130224745+00'00') /CreationDate (D:20201130230828+00'00')
>> >>
endobj endobj
2 0 obj 2 0 obj
@ -50,7 +50,7 @@ endobj
>> >>
endobj endobj
6 0 obj 6 0 obj
<< /Length 23842 << /Length 23843
>> >>
stream stream
q q
@ -656,7 +656,7 @@ ET
BT BT
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ET ET
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@ -2063,7 +2063,7 @@ endobj
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ET ET
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@ -2573,7 +2573,7 @@ endobj
/URI (http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html) /URI (http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html)
>> >>
/Subtype /Link /Subtype /Link
/Rect [83.574 781.41 394.938 805.89] /Rect [83.574 781.41 439.3436 805.89]
/Type /Annot /Type /Annot
>> >>
endobj endobj
@ -3479,7 +3479,7 @@ endobj
endobj endobj
59 0 obj 59 0 obj
<< /Limits [(__anchor-top) (_internet_of_things_iot)] << /Limits [(__anchor-top) (_internet_of_things_iot)]
/Names [(__anchor-top) 9 0 R (_an_introduction_to_linux) 24 0 R (_bash_associative_array_examples) 31 0 R (_bash_variable_indirect_expansion) 35 0 R (_create_a_mote_with_raspberry_piarduino) 44 0 R (_create_swarmlab_cluster) 52 0 R (_frequently_asked_questions) 74 0 R (_get_swarmlab_io_certificates) 19 0 R (_how_do_i_ask_a_good_question) 76 0 R (_install_docker) 16 0 R (_install_dual) 21 0 R (_internet_of_things_iot) 37 0 R] /Names [(__anchor-top) 9 0 R (_an_introduction_to_linux) 24 0 R (_bash_associative_array_examples) 31 0 R (_bash_heredocs_positional_parameters) 35 0 R (_create_a_mote_with_raspberry_piarduino) 44 0 R (_create_swarmlab_cluster) 52 0 R (_frequently_asked_questions) 74 0 R (_get_swarmlab_io_certificates) 19 0 R (_how_do_i_ask_a_good_question) 76 0 R (_install_docker) 16 0 R (_install_dual) 21 0 R (_internet_of_things_iot) 37 0 R]
>> >>
endobj endobj
60 0 obj 60 0 obj
@ -5583,7 +5583,7 @@ endobj
endobj endobj
114 0 obj 114 0 obj
<< /Border [0 0 0] << /Border [0 0 0]
/Dest (_bash_variable_indirect_expansion) /Dest (_bash_heredocs_positional_parameters)
/Subtype /Link /Subtype /Link
/Rect [60.24 530.15 79.9485 544.43] /Rect [60.24 530.15 79.9485 544.43]
/Type /Annot /Type /Annot
@ -5596,21 +5596,21 @@ endobj
/URI (http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html) /URI (http://docs.swarmlab.io/SwarmLab-HowTos/labs/ls/heredocs_ls.adoc.html)
>> >>
/Subtype /Link /Subtype /Link
/Rect [79.9485 530.15 250.7625 544.43] /Rect [79.9485 530.15 274.6708 544.43]
/Type /Annot /Type /Annot
>> >>
endobj endobj
116 0 obj 116 0 obj
<< /Border [0 0 0] << /Border [0 0 0]
/Dest (_bash_variable_indirect_expansion) /Dest (_bash_heredocs_positional_parameters)
/Subtype /Link /Subtype /Link
/Rect [79.9485 530.15 250.7625 544.43] /Rect [79.9485 530.15 274.6708 544.43]
/Type /Annot /Type /Annot
>> >>
endobj endobj
117 0 obj 117 0 obj
<< /Border [0 0 0] << /Border [0 0 0]
/Dest (_bash_variable_indirect_expansion) /Dest (_bash_heredocs_positional_parameters)
/Subtype /Link /Subtype /Link
/Rect [541.1705 530.15 547.04 544.43] /Rect [541.1705 530.15 547.04 544.43]
/Type /Annot /Type /Annot
@ -6207,7 +6207,7 @@ endobj
>> >>
endobj endobj
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/Parent 181 0 R /Parent 181 0 R
/Count 0 /Count 0
/Prev 185 0 R /Prev 185 0 R
@ -6842,238 +6842,238 @@ xref
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trailer trailer
<< /Size 234 << /Size 234
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>> >>
startxref startxref
158452 158503
%%EOF %%EOF

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labs/ls/heredocs_ls.adoc
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@ -25,7 +25,6 @@ Assuming you're already logged in
== heredoc == heredoc
=== Exercise === Exercise
[source,bash] [source,bash]
@ -64,9 +63,25 @@ done
echo "" echo ""
echo "" echo ""
cat << FOE > testfile.sh
declare -A array=(
[1,0]="first name"
[1,1]="second name"
[2,0]="third name"
[3,0]="foo bar"
[test 1]="test bar"
)
EOF
)
---- ----
=== expansion === expansion
[source,bash] [source,bash]
@ -76,3 +91,70 @@ win="real_fc" # $win is "real_fc"
echo "${!win}" # we print the variable linked by $win's content echo "${!win}" # we print the variable linked by $win's content
---- ----
== Bash Positional Parameters
- vim testvar.sh
- cut-paste
- chmod +x ./testvar.sh
- ./testvar.sh a1 a2 a3 a4 a5 a6 a7 a8 a9 10 11 12 13
[source,bash]
----
echo $#
echo $@
echo $?
cat <<'EOF'
$# = number of arguments.
$@ = what parameters were passed.
$* = what parameters were passed.
$? = was last command successful. Answer is 0 which means 'yes'
EOF
cat << FOE > testfile.sh
#!/bin/bash
RUSER=$1
ID=$2
SERVICE=$3
SERVICE_STACK=$4
VNCport=$5
RREPLICAS=$6
RREGION=$7
TTYport=$8
PASSWORDrw=$9
PASSWORDview=${10}
GIT_TUTOR=${11}
REBOOT=${12}
USERscope=${13}
FOE
chmod +x ./testfile.sh
#./testfile.sh
#
cat << 'FOE' > testfile1.sh
#!/bin/bash
RUSER=$1
ID=$2
SERVICE=$3
SERVICE_STACK=$4
VNCport=$5
RREPLICAS=$6
RREGION=$7
TTYport=$8
PASSWORDrw=$9
PASSWORDview=${10}
GIT_TUTOR=${11}
REBOOT=${12}
USERscope=${13}
FOE
chmod +x ./testfile1.sh
----
== extras

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