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Full Discussion: improve this?
Top Forums Shell Programming and Scripting improve this? Post 80066 by blowtorch on Wednesday 3rd of August 2005 01:59:48 AM
Old 08-03-2005
It does exactly what those commands do. Just that we dont have GNU 'date' and aren't allowed to install that either. So I came up with this. Just that the extreme cases like a difference of 100000 days takes a lot of time. Here is the output of uname -a:
SunOS xxxxxxx 5.8 Generic_117350-24 sun4u sparc SUNW,Ultra-Enterprise

There is almost no load on the server (uptime reports 0.06...).

Here are some 'time' command outputs for my script.

# time ./tonfro.sh 100
2005-11-11

real 0m0.31s
user 0m0.08s
sys 0m0.20s

# time ./tonfro.sh 10000
2032-12-19

real 0m7.84s
user 0m2.49s
sys 0m4.81s

# time ./tonfro.sh 100000
2279-05-19

real 1m16.19s
user 0m23.08s
sys 0m47.55s

--EDIT--
Is $() valid in sh? I am not using ksh. Also, assuming it is valid, will it run any faster than expr?
--/EDIT

Last edited by blowtorch; 08-03-2005 at 03:04 AM..
 

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rtprio(1)						      General Commands Manual							 rtprio(1)

NAME
rtprio - execute process with real-time priority SYNOPSIS
priority command [arguments] priority command [arguments] DESCRIPTION
executes command with a real-time priority, or changes the real-time priority of currently executing process pid. Real-time priorities range from zero (highest) to 127 (lowest). Real-time processes are not subject to priority degradation, and are all of greater (schedul- ing) importance than non-real-time processes. See rtprio(2) for more details. If is specified instead of a real-time priority, executes command with a timeshare (non-real-time) priority, or changes the currently exe- cuting process pid from a possibly real-time priority to a timeshare priority. The former is useful to spawn a timeshare priority command from a real-time priority shell. If is not specified, command is not scheduled, or pid's real-time priority is not changed, if the user is not a member of a group having access and is not the user with appropriate privileges. When changing the real-time priority of a currently executing process, the effec- tive user ID of the calling process must be the user with appropriate privileges, or the real or effective user ID must match the real or saved user ID of the process to be modified. RETURN VALUE
returns exit status 0 if command is successfully scheduled or if pid's real-time priority is successfully changed, 1 if command is not exe- cutable or pid does not exist, and 2 if command (pid) lacks real-time capability, or the invoker's effective user ID is not a user who has appropriate privileges, or the real or effective user or the real or effective user ID does not match the real or saved user ID of the process being changed. EXAMPLES
Execute file at a real-time priority of 100: Set the currently running process pid 24217 to a real-time priority of 40: AUTHOR
was developed by HP. SEE ALSO
setprivgrp(1M), getprivgrp(2), rtprio(2). rtprio(1)
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