Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Seeking clarification: function within if conditional Post 302992302 by strategery on Thursday 23rd of February 2017 03:26:12 PM
Old 02-23-2017
Seeking clarification: function within if conditional

So I'm trying to understand exactly what happens if you do as mentioned in title...my example:
Code:
[user@pc /]$ nslookup www.google.com &>/dev/null;echo $?
0
[user@pc /]$ nslookup foo.google.com &>/dev/null;echo $?
1
[user@pc /]$ if nslookup www.google.com &>/dev/null;then echo pass;else echo fail;fi
pass
[user@pc /]$ if nslookup foo.google.com &>/dev/null;then echo pass;else echo fail;fi
fail

So, even though exit status is 0, the same function passes an if conditional test. So I assume using the function within the if conditional looks at a return value rather than exit status? A lot of people and docs on the matter seem to refer to exit status as a return, making these two seem synonymous when they aren't(?) Can someone please help clarify what the if conditional is actually checking?
 

8 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

seeking a doc on lvm etc...

Hi. I wanted to increase my knowledge base with unix. can you help me find a like that talks about luns, physical volumes, volume groups, logical volumes then mountpoints? i would appreciate it thanks Jigar (1 Reply)
Discussion started by: jigarlakhani
1 Replies

2. UNIX for Dummies Questions & Answers

Seeking help...Urgent!!! Please help me...

Can any1 please help me answer a couple of this question? 1) What is the process management of UNIX? (single task, multitasks, etc...) 2) What is the process management of Linux? (single task, multitasks, etc...) 3) What is the type of process of UNIX? (process, thread, etc...) 4)... (1 Reply)
Discussion started by: blind02002
1 Replies

3. Shell Programming and Scripting

seeking help with shell script

I am trying to update a script which I had created to monitor tablespace usage. Originally the sql spooled out to a text file anything with more than 75% used. I have been asked to change this. Now the sql must spool out all tablespaces. The script I have to write should scan the file for... (4 Replies)
Discussion started by: Niadh
4 Replies

4. Programming

Seeking Some libs for AIX 5.3

hello everybody! I m compiling some program with the g++ on AIX 5.3 and it needs some library that i didn't find them i am new with the AIX here is the compilation error : g++ -Daix -fpic -o printps -lxercesc1_1 -L/oracle/OraHome/lib32/ -L/epost2/blitz/lib -lhmltods -lhmltops -lgeneric... (0 Replies)
Discussion started by: eternalflame
0 Replies

5. Shell Programming and Scripting

seeking help in text processing

Hi, I am a newbie in shell scripting. I want to get an expert help in solving a text processing issue. The issue I am facing is that, in the below log file contents I need to extract each block of lines (it could be a single line also) based on some regular expression and store it in... (8 Replies)
Discussion started by: Alecs
8 Replies

6. Shell Programming and Scripting

[grep] seeking more than one word

Hello everybody, How can I do seek several words with grep command ? I didn't find how to do that in the man for I'm French. Then I tried man bash | grep -in control flow But flow is interpreted as an input file Then I tried man bash | grep -in "control" -a "flow" but doesn't seem to work... (4 Replies)
Discussion started by: Oddant
4 Replies

7. Shell Programming and Scripting

Seeking help with search

Hello All, I'm looking for some help with grepping for two specific strings in files with multiple lines. For instance, I have files and the content looks like this: =====Start===== Record:1 Field 1 = aaaaaaaaaa Field 2 = bbbbbbbbbb Field 3 = 1234567890 ... (9 Replies)
Discussion started by: bbbngowc
9 Replies

8. Shell Programming and Scripting

Seeking Alternative for diff in hp

Hi , I have to use HP-unix OS to get difference between 2 files.while i tried a piece of code in other OS(linux/unix) as below, it worked fine & the output is desired one. diff --suppress-common-lines -y file_1 file_2 >d.txt The same doesn't works in HP -unix. Any help shall be... (6 Replies)
Discussion started by: vinil
6 Replies
PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME
paps - UTF-8 to PostScript converter using Pango SYNOPSIS
paps [options] files... DESCRIPTION
paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves through the pango ft2 backend. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. --landscape Landscape output. Default is portrait. --columns=cl Number of columns output. Default is 1. --font=desc Set the font description. Default is Monospace 12. --rtl Do rtl layout. --paper ps Choose paper size. Known paper sizes are legal, letter, a4. Default is A4. --bottom-margin=bm Set bottom margin in postscript points (1/72 inch). Default is 36. --top-margin=tm Set top margin. Default is 36. --left-margin=lm Set left margin. Default is 36. --right-margin=rm Set right margin. Default is 36. --help Show summary of options. --header Draw page header for each page. --markup Interpret the text as pango markup. --encoding=ENCODING Assume the documentation encoding is ENCODING. --lpi Set the lines per inch. This determines the line spacing. --cpi Set the characters per inch. This is an alternative method of specifying the font size. --stretch-chars Indicates that characters should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops behaviour. AUTHOR
paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>. This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others). April 17, 2006 PAPS(1)
All times are GMT -4. The time now is 06:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy