Sponsored Content
Top Forums Shell Programming and Scripting [Solved] BASH - chaining TEST and COMMAND with && and II Post 302725411 by RudiC on Friday 2nd of November 2012 07:20:34 AM
Old 11-02-2012
Bakunin's explanation is correct and little to add for the cases covered. But the orig. request had a construct like A && B || C. In this case, C is the "fallback" branch in case A should fail:
Code:
$ true && echo "YES" || echo "NO"
YES
$ false  && echo "YES" || echo "NO"
NO

And this is what happens in the request: Variable B collects all packages to be installed and D all packages to be updated.
This User Gave Thanks to RudiC For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

sleep 10 && command doesn't work

Hi there, I found a trick to easily postpone a command by a few seconds: supernova:~# sleep 10 && command &If you logout, the command should still be executed... But not all the time. Could anyone of you explain me why the following command is executed even after logging out: supernova:~# sleep... (2 Replies)
Discussion started by: chebarbudo
2 Replies

2. UNIX for Dummies Questions & Answers

Problem with xterm & tcsh & sourcing a script in a single command

Hi friends, I have a script that sets the env variable path based on different conditions. Now the new path variable setting should not done in the same terminal or same shell. Only a new terminal or new shell should have the new path env variable set. I am able to do this only as follows: >cd... (1 Reply)
Discussion started by: sowmya005
1 Replies

3. Shell Programming and Scripting

PHP read large string & split in multidimensional arrays & assign fieldnames & write into MYSQL

Hi, I hope the title does not scare people to look into this thread but it describes roughly what I'm trying to do. I need a solution in PHP. I'm a programming beginner, so it might be that the approach to solve this, might be easier to solve with an other approach of someone else, so if you... (0 Replies)
Discussion started by: lowmaster
0 Replies

4. Shell Programming and Scripting

replace & with & xml file

Hello All I have a xml file with many sets of records like this <mytag>mydata</mytag> <tag2>data&</tag2> also same file can be like this <mytag>mydata</mytag> <tag2>data&</tag2> <tag3>data2&amp;data3</tag3> Now i can grep & and replace with &amp; for whole file but it will replace all... (4 Replies)
Discussion started by: lokaish23
4 Replies

5. Shell Programming and Scripting

Replace & sign to &amp word

Hi, I have text file abc.txt. In this file, I have the following data. Input: Mr Smith &amp Mrs Smith Mr Smith &apos Mrs Smith Mr Smith & Mrs Smith Mr Smith& Mrs Smith Mr Smith &Mrs Smith Output: Mr Smith &amp Mrs Smith Mr Smith &apos Mrs Smith Mr Smith &amp Mrs Smith Mr Smith&amp... (4 Replies)
Discussion started by: naveed
4 Replies

6. Shell Programming and Scripting

bash aliases and command chaining with ; (semi-colon)

What am I doing wrong here? Or is this not possible? A bug? alias f='find . >found 2>/dev/null &' f ; sleep 20 ; ls -l -bash: syntax error near unexpected token `;' (2 Replies)
Discussion started by: star_man
2 Replies

7. UNIX for Dummies Questions & Answers

[solved] Where & what bash env file, Mac OS?

Hi! I wanted to simplify my bash prompt, so I edited my etc/bashrc file. I thought this was the file that would override any other env files. When I opened it, I saw that the way it was setup was not what my prompt looked like, although I forget exactly what was there. But i edited it the way I... (1 Reply)
Discussion started by: sudon't
1 Replies

8. Shell Programming and Scripting

Read input while another command is running &&

This script runs tshark, then displays the output. I want to read a keypress at all times throughout this script, especially during the 10 seconds that tshark is running. This code however, only takes input before tshark runs. #!/bin/bash main() { while (( "1" == "1" )) ; do keypress &&... (3 Replies)
Discussion started by: Kiah07
3 Replies

9. Shell Programming and Scripting

If && command giving wrong output

Hi All, I am trying to run a script which will search for 2 strings(stopped,started) in a text file and echo an output depending on below condition -bash-3.2$ cat trial1.txt v ggg f -bash-3.2$ cat trial1.sh VAR9=` grep 'stopped' /tmp/trial1.txt` VAR10=` grep 'started'... (4 Replies)
Discussion started by: srkmish
4 Replies

10. Shell Programming and Scripting

SFTP Shell Script Get & Delete && Upload & Delete

Hi All, Do you have any sample script, - auto get file from SFTP remote server and delete file in remove server after downloaded. - only download specify filename - auto upload file from local to SFTP remote server and delete local folder file after uploaded - only upload specify filename ... (3 Replies)
Discussion started by: weesiong
3 Replies
MSSQL_NUM_FIELDS(3)													       MSSQL_NUM_FIELDS(3)

mssql_num_fields - Gets the number of fields in result

SYNOPSIS
int mssql_num_fields (resource $result) DESCRIPTION
mssql_num_fields(3) returns the number of fields in a result set. PARAMETERS
o $result - The result resource that is being evaluated. This result comes from a call to mssql_query(3). RETURN VALUES
Returns the number of fields, as an integer. EXAMPLES
Example #1 mssql_num_fields(3) example <?php // Connect to MSSQL and select the database $link = mssql_connect('KALLESPCSQLEXPRESS', 'sa', 'phpfi'); mssql_select_db('php', $link); // Select some data from our database $data = mssql_query('SELECT [name], [age] FROM [php].[dbo].[persons]'); // Construct a table echo '<table border="1">'; $header = false; // Iterate through returned results while ($row = mssql_fetch_array($data)) { // Build the table header if (!$header) { echo '<thead>'; echo '<tr>'; for ($i = 1; ($i + 1) <= mssql_num_fields($data); ++$i) { echo '<td>' . ucfirst($row[$i]) . '</td>'; } echo '</tr>'; echo '</thead>'; echo '<tbody>'; $header = true; } // Build the row echo '<tr>'; foreach($row as $value) { echo '<td>' . $value . '</td>'; } echo '</tr>'; } // Close table echo '</tbody>'; echo '</table>'; // Clean up mssql_free_result($data); mssql_close($link); ?> SEE ALSO
mssql_query(3), mssql_fetch_field(3), mssql_num_rows(3). PHP Documentation Group MSSQL_NUM_FIELDS(3)
All times are GMT -4. The time now is 07:35 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy