Databases
StackOverflow2013
Postsdbo
POZSH subString extraction
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POZSH subString extraction
    primarykey
    data
    text
    <h2>Goal</h2> <p>In <strong>ZSH</strong> script, for a given args, I want to obtain the first string and the rest.</p> <p>For instance, when the script is named <code>test</code></p> <pre><code>sh test hello </code></pre> <p>supposed to extract <code>h</code> and <code>ello</code>.</p> <h2><a href="http://zsh.sourceforge.net/Doc/" rel="noreferrer">ZSH manual</a></h2> <p><a href="http://zsh.sourceforge.net/Doc/zsh_a4.pdf" rel="noreferrer">http://zsh.sourceforge.net/Doc/zsh_a4.pdf</a></p> <p>says:</p> <blockquote> <p>Subscripting may also be performed on non-array values, in which case the subscripts specify a substring to be extracted. For example, if FOO is set to ‘foobar’, then ‘echo $FOO[2,5]’ prints ‘ooba’.</p> </blockquote> <h2>Q1</h2> <p>So, I wrote a shell script in a file named <code>test</code></p> <pre><code>echo $1 echo $1[1,1] </code></pre> <p>terminal:</p> <pre><code>$ sh test hello hello hello[1,1] </code></pre> <p>the result fails. What's wrong with the code?</p> <h2>Q2</h2> <p>Also I don't know how to extract subString from n to the last. Perhaps do I have to use Array split by regex?</p> <h2>EDIT: Q3</h2> <p>This may be another question, so if it's proper to start new Thread, I will do so.</p> <p>Thanks to @skishore Here is the further code</p> <pre><code>#! /bin/zsh echo $1 ARG_FIRST=`echo $1 | cut -c1` ARG_REST=`echo $1 | cut -c2-` echo ARG_FIRST=$ARG_FIRST echo ARG_REST=$ARG_REST if $ARG_FIRST = ""; then echo nullArgs else if $ARG_FIRST = "@"; then echo @Args else echo regularArgs fi fi </code></pre> <p>I'm not sure how to compare string valuables to string, but for a given args <code>hello</code></p> <p>result:</p> <pre><code>command not found: h </code></pre> <p>What's wrong with the code?</p> <h2>EDIT2:</h2> <p>What I've found right</p> <pre><code>#! /bin/zsh echo $1 ARG_FIRST=`echo $1 | cut -c1` ARG_REST=`echo $1 | cut -c2-` echo ARG_FIRST=$ARG_FIRST echo ARG_REST=$ARG_REST if [ $ARG_FIRST ]; then if [ $ARG_FIRST = "@" ]; then echo @Args else echo regularArgs fi else echo nullArgs fi </code></pre> <h2>EDIT3:</h2> <p>As the result of whole, this is what I've done with this question.</p> <h3><a href="https://github.com/kenokabe/GitSnapShot" rel="noreferrer">https://github.com/kenokabe/GitSnapShot</a></h3> <p><strong>GitSnapShot</strong> is a ZSH thin wrapper for Git commands for easier and simpler usage</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USKen OKABE
    1. USKen OKABE
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload