Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: && meaning in UNIX
Top Forums UNIX for Beginners Questions & Answers && meaning in UNIX Post 302966014 by Scrutinizer on Saturday 6th of February 2016 07:41:48 AM
Old 02-06-2016
Quote:
Originally Posted by Archana Batta
Hi,

I am not sure about awk but in Shell scripting the logical and operator should be "-a" but not "&&". Isn't it??

I tried below script using && which didn't work. But it worked only after replacing && with "-a".

Code:
if [ $a && $b ]
then
   echo "I am in IF block"
fi

Below syntax worked fine
Code:
if [ $a -a $b ]
then
   echo "I am in IF block"
fi

[..]
The -a operand is deprecated in the POSIX standard. The recommended way is to use the && operator like so (leaving the variable expansions unquoted, like in your example):
Code:
if [ $a ] && [ $b ]
then
   echo "I am in IF block"
fi

This User Gave Thanks to Scrutinizer For This Post:
Archana Batta
 

10 More Discussions You Might Find Interesting

1. UNIX Desktop Questions & Answers

what is the difference between Unix & linux, what are the advantages & disadvantages

ehe may i know what are the difference between Unix & Linux, and what are the advantages of having Unix as well as disadvantages of having Unix or if u dun mind i am dumb do pls tell me what are the advantages as well as the disadvantages of having linux as well. thanks (1 Reply)
Discussion started by: cybertechmkteo
1 Replies

2. UNIX for Dummies Questions & Answers

meaning of .& in shell

Hi , can anyone explain me the meaning of following line ". &13FNAME/version_encours/cfg/dfm.cfg" Regards (1 Reply)
Discussion started by: scorpio
1 Replies

3. Shell Programming and Scripting

meaning of & in sh shell

All, I have a line in my code like below , could any one please tell me what this actually mean what is the & doding there. I am in sh shell #!/bin/sh .............. mv &fname &III.tar.gz Thanks in Advance, Arun (1 Reply)
Discussion started by: arunkumar_mca
1 Replies

4. Shell Programming and Scripting

Meaning of >&2

What does >&2 at the end of the statement echo "Alright man..." >&2 mean? (4 Replies)
Discussion started by: proactiveaditya
4 Replies

5. 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

6. 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

7. 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

8. Shell Programming and Scripting

meaning of &1

All, In the below mentioned line --- $SCRIPT_FILES/wrapper_sleep.ksh > $MVXREFLOG 2>&1 what is the meaning of &1 here. Regards Oracle User (2 Replies)
Discussion started by: Oracle_User
2 Replies

9. Shell Programming and Scripting

How to write If statement using && and operator in Unix

Hi What is the syntax for if statement using && and || operator? if && ] || here its giving me an error to this if statement any suggestion?? (2 Replies)
Discussion started by: Avi
2 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

LEARN ABOUT SUSE

fc-match

FC-MATCH(1)															       FC-MATCH(1)

NAME

       fc-match - match available fonts

SYNOPSIS

       fc-match [ -svV? ] [ --sort ] [ --verbose ] [ --version ] [ --help ] [ font-pattern ]

DESCRIPTION

       fc-match  matches  font-pattern	(empty pattern by default) using the normal fontconfig matching rules to find the best font available.	If
       --sort is given, the sorted list of best matching fonts is displayed.  With --verbose, the whole font pattern for each  match  is  printed,
       otherwise only the file, family and style are printed..

OPTIONS

       This program follows the usual GNU command line syntax, with long options starting with two dashes (`-').  A summary of options is included
       below.

       -v --verbose
	      Print whole font pattern for each match.

       -? --help
	      Show summary of options.

       -V --version
	      Show version of the program and exit.

       -s --sort
	      Displays sorted list of best matching fonts.

       font-pattern
	      Displays fonts matching font-pattern (uses empty pattern by default).

SEE ALSO

       fc-list (1).

       The fontconfig user's guide, in HTML format: /usr/share/doc/packages/fontconfig/fontconfig-user.html.

AUTHOR

       This manual page was updated by Patrick Lam <plam@csail.mit.edu>.

								  16 October 2006						       FC-MATCH(1)
All times are GMT -4. The time now is 08:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy