Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: A Question Regarding Timers and Output
Top Forums Shell Programming and Scripting A Question Regarding Timers and Output Post 302619295 by Scrutinizer on Thursday 5th of April 2012 08:20:06 AM
Old 04-05-2012
yes, but also dash, which is a no-thrills POSIX compliant shell, does not offer $SECONDS, and I cannot find it in the POSIX specifications either. So I think it is a bash/ksh thing and not a POSIX shell thing. So I think this will maybe also not be present in /usr/xpg4/bin/sh and if it is then it should be considered an extension.


--
Sidenote: The decimal places to $SECONDS are available in ksh93, but I don't think we need to cut off the decimal places, since ksh93 can do full floating point arithmetic, so all it does is give us some extra precision, no?
Last edited by Scrutinizer; 04-05-2012 at 09:32 AM..
 

10 More Discussions You Might Find Interesting

1. Programming

unix and timers

Hello there.. I need to know when i start indipendant timers how can i recognize which of the active timers have made timeout alarm. The number of started timers depends on the running app I'd appreciate your help Thanks in advance (0 Replies)
Discussion started by: nightcat
0 Replies

2. Programming

A question about output.

I am learning output the data to a file using "ofstream". I need to read data from a file and output the result to the other file in 2 different ways. To do that I have to provoke two functions, and they have to output the result to the same text file. My problem is: they are correct on the screen... (2 Replies)
Discussion started by: HOUSCOUS
2 Replies

3. UNIX for Dummies Questions & Answers

Question on prtdiag output ...

Hello all , This is the output of my prtdiag command ...The speed of each of the CPUs is listed below (1281 MHz ) ..That's fine ..I'm confused about the (System clock frequency: 183 MHZ ) ..What is the difference between System Clock freq and CPU freq ...THanks.. System Configuration: Sun... (5 Replies)
Discussion started by: luft
5 Replies

4. Shell Programming and Scripting

display and output...question

Hi, I have a small question about the value cannot display correctly: MSG=log fruit=apple print "No $fruit in the store" > "$MSG/fruit_message.txt" output: No $fruit in the store should be: No apple in the store AND $MSG/fruit_message.txt ----------> cannot find the... (5 Replies)
Discussion started by: happyv
5 Replies

5. Shell Programming and Scripting

Question about output to file

Hi, I am try to setup a FOR loop script to find out all the existing linux workstations in the network w/ ip address, hostname and linux version. I created a basic FOR loop script: for i in $(seq 1 254) do echo 10.72.169.$i >> result ssh -o ConnectTimeout=3 root@10.72.169.$i "hostname"... (1 Reply)
Discussion started by: beeloo
1 Replies

6. Programming

Doubts about timers in linux kernel

Hi , I am trying to learn timers in linux kernel. I am trying to write a program where I can configure a timer to tick in every 5 seconds and a function should thus exicute in every five seconds. I tried one program with the help of linux/timer.h headerfile but I couldnt get the... (4 Replies)
Discussion started by: iamjayanth
4 Replies

7. Solaris

Question on kstat output

I'm having a little trouble understanding the output I'm seeing from kstat for the "net" class. I'm seeing a lot of entries with "mac" as the name, like this. module: bge instance: 3 name: mac class: net ... (3 Replies)
Discussion started by: Midcain
3 Replies

8. Shell Programming and Scripting

Command Output Question

Hi everyone-- I'm new to these forums and shell scripting, and I'm trying to write a script that checks if a particular ip is pingable My idea was to check if the output of the command ping <some ip> -c 1 -w 1 had the string: "1 packet transmitted, 1 received"How would I go about doing this?... (2 Replies)
Discussion started by: Prodiga1
2 Replies

9. Programming

pthread_mutex_timedlock and Timers option

in its man-page pthread_mutex_timedlock documents that the absolute timeout parameter should be based on the CLOCK_REALTIME clock or in the system clock. All this depending on whether the 'Timers option' is supported or not. What do they mean by 'Timers option'? How could I tell for sure what... (8 Replies)
Discussion started by: ramestica
8 Replies

10. Shell Programming and Scripting

INPUT/OUTPUT question

Hi All, Is it wrong to do something like this: ssh -T $PROXY_USER@$PROXY_SERVER < script.txt > ssh_output.log I ran and it works fine and does what I need. I wanted to pass a set of commands to the ssh session and store an output in the log file. Thanks (4 Replies)
Discussion started by: rdogadin
4 Replies

LEARN ABOUT SUNOS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The  following  default	shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
       /bin/tcsh,  /bin/zsh,  /sbin/jsh,  /sbin/sh,  /usr/bin/bash,  /usr/bin/csh,  /usr/bin/jsh,  /usr/bin/ksh,  /usr/bin/pfcsh,  /usr/bin/pfksh,
       /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.

       Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).

FILES

       /etc/shells	       lists shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.10							    4 Jun 2001								 shells(4)
All times are GMT -4. The time now is 04:18 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy