Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #847
Difficulty: Medium
Proximity marketing is the localized wireless distribution of advertising content associated with a particular place.
True or False?
Linux & Unix Commands - Search Man Pages

true(1) [freebsd man page]

TRUE(1) 						    BSD General Commands Manual 						   TRUE(1)

NAME
true -- return true value SYNOPSIS
true DESCRIPTION
The true utility always returns with an exit code of zero. Some shells may provide a builtin true command which is identical to this utility. Consult the builtin(1) manual page. SEE ALSO
builtin(1), csh(1), false(1), sh(1) STANDARDS
The true utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD
June 9, 1993 BSD

Check Out this Related Man Page

NOHUP(1)						    BSD General Commands Manual 						  NOHUP(1)

NAME
nohup -- invoke a utility immune to hangups SYNOPSIS
nohup [--] utility [arguments] DESCRIPTION
The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored. If the standard output is a ter- minal, the standard output is appended to the file nohup.out in the current directory. If standard error is a terminal, it is directed to the same place as the standard output. Some shells may provide a builtin nohup command which is similar or identical to this utility. Consult the builtin(1) manual page. ENVIRONMENT
The following variables are utilized by nohup: HOME If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create the file. PATH Used to locate the requested utility if the name contains no '/' characters. DIAGNOSTICS
The nohup utility exits with one of the following values: 126 The utility was found, but could not be invoked. 127 The utility could not be found or an error occurred in nohup. Otherwise, the exit status of nohup will be that of utility. SEE ALSO
builtin(1), csh(1), signal(3) STANDARDS
The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BUGS
Two or more instances of nohup can append to the same file, which makes for a confusing output. BSD
July 19, 2001 BSD

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

CDE

I'm running Digital Unix True64 system. version4.0. My CDE is shutoff. How can I start the CDE. When I boot my system I don't even get graphic startup picture in the beginn. I've tried to activate thourgh Graphical UI Selection Facility in /usr/sbin/setup.But all I have is alot of inactive... (12 Replies)
Discussion started by: Peterh
12 Replies

2. Shell Programming and Scripting

why isn't the exit status true?

the code: do } ] || mkdir -p ${mk_backup_dir} && echo "ERROR: release backup directory creation failed -${mk_backup_dir}" && exit done echo "INFO: Backup directories created" the result: mkdir: "/cm/uat_releases/riab/uat/2345": Permission denied ERROR: release backup directory... (5 Replies)
Discussion started by: mjays
5 Replies

3. Shell Programming and Scripting

how to exit a while true loop

Hi guys, I'm new to unix but loving it!! BUT this is driving me nuts as i can't work out the best way to do it. I have a while true loop that i use to monitor something. For my own reasons in ths script i have disabled the CTRL C using the trap command. But i want to put in a option to exit... (5 Replies)
Discussion started by: Noob e
5 Replies

4. Shell Programming and Scripting

How to capture 2 consecutive rows when a condition is true ?

Hi All, i have an input below. As long as "x= 1" , i would want to capture 2 lines using sed or awk for eg : 0001 x= 1 $---------------------------------..-.--.. 0001 tt= 137 171 423 1682 2826 0 Pls help. Thanks in advance. Note that the number of lines in each block do... (37 Replies)
Discussion started by: Raynon
37 Replies

5. UNIX for Dummies Questions & Answers

Funny but true....

Hallo everybody I am having a shell script called auto_run.sh in that only the first line works. the second line which has sed command is working only at the # prompt. not within the shell script. What could be the reason. *... sed 's/ //g' KTI >abc works in another shell script without the... (6 Replies)
Discussion started by: naushad
6 Replies

6. Solaris

True or false ? - Sun cluster 3.2 U3 questions...

I'm using clustered zones on my machine. i'm only at the test phase of my design and ultimately the oracle zones will be using VxVM. When the testing phase is complete, VxVM will be used in the containers. It is necessary for VxVM to run in the global zone for the containers to use it (is... (5 Replies)
Discussion started by: frustin
5 Replies

7. Shell Programming and Scripting

Using arrays in bash using strings to bash built-in true

I have the following code and for some reason when I call the program using /home/tcdata/tatsh/trunk/hstmy/bin/bash/raytrac.bash --cmod=jcdint.cmod I get hasArgument = hasArgument = true Somehow the array element is returning even though I have not chosen the option. ... (41 Replies)
Discussion started by: kristinu
41 Replies

8. UNIX for Dummies Questions & Answers

Remove a folder after a 'true' uninstall....

Okay, I need some nerd magic here! LOL! Using a bash script, I have a folder that I'd like to remove upon uninstalling a package. That part is simple but what isn't simple is taking into consideration a 'reinstall' or 'upgrade' of that same package. By default, 'reinstalling' or 'upgrading'... (8 Replies)
Discussion started by: thazsar
8 Replies

9. Shell Programming and Scripting

Check Character matching from pos 7-15 to pos 211-219 if True then replace 211-219 with spaces

Script for if characters from positions 7-15 are matching with characters from position 211-219 then replace all char from 211-219 with 9 space. Total length of record is 420. Here is the specification of the data in file. Position Field Data Type... (5 Replies)
Discussion started by: lancesunny
5 Replies

10. Shell Programming and Scripting

How to get script to wait until status is true before continuing?

I'm extremely new to shell scripting so I apologize for the crudeness of my descriptions. I am editing a script that will write files (e.g. Job0_A.com, Job1_A.com, etc.) and then run them through a program called gaussian (computational chemistry program). The script will then take the output files... (10 Replies)
Discussion started by: butson
10 Replies

11. UNIX for Dummies Questions & Answers

Problem getting mailx to send true Bcc mail to multiple recipients

I am having trouble getting mailx to send multiple Bcc mails out without everyone in the list of recipients seeing everyone else's email addresses. I looked at the man pages of my system and seem to be following the syntax correctly, but the mails still go out as if I were just putting in a list of... (7 Replies)
Discussion started by: legrandtimonier
7 Replies

12. UNIX for Dummies Questions & Answers

awk If expression - Return string if not true

Hi, I have the following txt file List_With_Duplicates.txt; a,1,1 b,3,4 c,5,2 d,6,1 e,3,3 f,3,7 When I run the command awk -F ',' '{if($2==$3){print $1","$2","$3}}' List_With_Duplicates.txt I get the following output; a,1,1 e,3,3 This works! as I've compared the 2nd & 3rd... (7 Replies)
Discussion started by: mmab
7 Replies

13. Solaris

True random numbers in Sol10

Hi everyone I just got my hands on a T5120 running Sol10. As far as I've read, the T2 chip has a built-in hardware number generator. My question is: how can I access it to get random numbers in either C or Fortran? I'm using Sun Studio 12.4. I am currently trying to write an... (13 Replies)
Discussion started by: toguro123
13 Replies

14. Shell Programming and Scripting

Find string1, when true find string2 in reverse direction

Hello, This is a bit complicated for me. My scenario in MyFile: Search string1, When string1 is found, grep the line containing string1, go back over that line in upward direction and grep the first line containing string2. Here is an example: MyFile His email address... (17 Replies)
Discussion started by: baris35
17 Replies

15. UNIX for Beginners Questions & Answers

How to replace the field values, which are greater than the specified value with TRUE?

I have a csv file as given below, org1 org2 org3 org4 org5 gene1 100 80 90 80 150 gene2 30 70 50 50 115 gene3 40 120 60 40 105 gene4 20 72 40 60 20 I need to replace the fields are having values greater than 100 with "TRUE". I used the following commands to replace... (6 Replies)
Discussion started by: dineshkumarsrk
6 Replies

Featured Tech Videos