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        <h1>Syntax: Bash</h1>

        <p>Bash is context-sensitive - a script could mean different things depending on what is defined in the environment. Thus, to present Bash code clearly, you will need to use inline markup, such as the last example on this page.</p>

        <pre><code class="syntax language-bash-script">#!/bin/bash

# Counting to 11 in 10 different ways.

n=1; echo -n &quot;$n &quot;

let &quot;n = $n + 1&quot; # let &quot;n = n + 1&quot; also works. echo -n &quot;$n &quot;

: $((n = $n + 1)) # &quot;:&quot; necessary because otherwise Bash attempts + to interpret &quot;$((n = $n + 1))&quot; as a command. echo -n &quot;$n &quot;

(( n = n + 1 )) # A simpler alternative to the method above. # Thanks, David Lombard, for pointing this out. echo -n &quot;$n &quot;

n=$(($n + 1)) echo -n &quot;$n &quot;

: $[ n = $n + 1 ] # &quot;:&quot; necessary because otherwise Bash attempts + to interpret &quot;$[ n = $n + 1 ]&quot; as a command. # Works even if &quot;n&quot; was initialized as a string. echo -n &quot;$n &quot;

n=$[ $n + 1 ] # Works even if &quot;n&quot; was initialized as a string. * Avoid this type of construct, since it is obsolete and nonportable. # Thanks, Stephane Chazelas. echo -n &quot;$n &quot;

# Now for C-style increment operators. # Thanks, Frank Wang, for pointing this out.

let &quot;n++&quot; # let &quot;++n&quot; also works. echo -n &quot;$n &quot;

(( n++ )) # (( ++n ) also works. echo -n &quot;$n &quot;

: $(( n++ )) # : $(( ++n )) also works. echo -n &quot;$n &quot;

: $[ n++ ] # : $[ ++n ]] also works echo -n &quot;$n &quot;

echo

exit 0</code></pre>

<p>

<pre><code class=“syntax bash-script”>#!/bin/bash

svc_cluster_ip=10.0.0.10 svc_priv_dsa=~/.ssh/id_dsa

if [ ! -f $svc_priv_dsa ] ; then

echo &quot; ${0##*/} is missing the SSH DSA private key&quot;
echo &quot;                         needed to access the SAN Volume controller.&quot;
echo &quot; Please specify the correct path!&quot;

fi

if [ -z $1 ] ; then

echo
echo &quot; ${0##*/} [ WWPN ]&quot;
echo
echo &quot;  WWPN    - WWPN, or part of WWPN that is being searched.&quot;
echo &quot;            Should be entered in continous format (ie. no dash (-) or colon (:))!&quot;
echo
exit 1;

fi

WWPN=$1

list_wwpn_by_host() {

local _host=$1

if [ ! -z $_host ] ; then
        ssh -i $svc_priv_dsa admin@$svc_cluster_ip svcinfo lshost \
        -delim : $_host | grep ^WWPN | sed &quot;s,WWPN:,,&quot;
fi

}

set -x

HOST_LIST=&quot;$( ssh -i $svc_priv_dsa admin@$svc_cluster_ip svcinfo lshost -delim : -nohdr | cut -d: -f2 )&quot;

for HOST in $HOST_LIST; do

echo -n &quot;$HOST: &quot;
echo `list_wwpn_by_host $HOST`

done | grep $WWPN

set +x </code></pre>

<p>This next example uses inline HTML to markup and highlight <code class=“syntax bash-script”>rd-resolve-test bob</code>.</p>

<pre id=“ex2”><code class=“syntax brush-bash”>samuel@ayako:~$ which git /usr/bin/git samuel@ayako:~$ ls -lah getconf getent getopt getopts gettext gettext.sh gettextize

samuel@ayako:~# sudo <span class=“highlight”><span class=“function”>rd-resolve-test</span> bob</span> /home/samuel</code></pre>

<p>Here is the HTML of the above <code class=“syntax html”>&lt;pre&gt;</code>:</p>

<pre id=“ex2_html” class=“syntax html”></pre>

<script type=“text/javascript”>

$('#ex2_html').text($('<div>').append($('#ex2').clone()).html());

</script>

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