I need a script that will check if what I input is a file or not.
Also a short script that copies a file that I tell it to, to a directory I tell it to.
Thanks. Those are the only 2 I need, I got the other 8 done. (1 Reply)
I'm writing a bash script to log some selections from a sensors output (core temp, mb temp, etc.) and I would also like to have the current cpu usage as a percentage. I have no idea how to go about getting it in a form that a bash script can use. For example, I would simply look in the output of... (3 Replies)
I wrote a very simple script that matches combinations of alphabetic characters (1-5). I want to use it to test CPU speeds of different hardware/platforms. The problem is that on multi-core/processor systems, only one CPU is being utilized to execute the script. Is there a way to change that?... (16 Replies)
I'd like to streamline the code more than a bit to get it to run faster.
There's a thread about this and related issues of mine on the Cygwin mailing-list, but I want to eliminate any chances it might just be inefficient/inelegant/crappy code. A previous run of the same script on both Cygwin and... (6 Replies)
Please take a look I am stuck on step 4
1. The problem statement, all variables and given/known data:
#!/bin/bash
### ULI101 - ASSIGNMENT #2 (PART A) - DUE DATE Wed, Aug 3, 2011, before 12 midnight.
###====================================================================================
###... (13 Replies)
Here's the assignment. I'll bold the parts that are rough for me. Unfortunately, that's quite a bit lol. The syntax is, of course, where my issues lie, for the most part. I don't have a lot of programming experience at all :/. I'd post what I've already done, but I'm so lost I really don't know... (1 Reply)
Suppose I have a file named Stuff in the same directory as my script. Does the following assign the file Stuff to a variable?
Var="Stuff"
Why doesn't this just assign the string Stuff? Or rather how would I assign the string Stuff to a variable in this situation?
Also, what exactly is... (3 Replies)
I have come across a weird behaviour in bash and would love to get to the bottom of it. If I execute echo -e "\na\nb\nc\n" at the command line, I get:
a
b
c
However, if I wrap it in an assignment such as:
A="$( echo -e "\na\nb\nc\n" )"then I get
a
b
cIt doesn't show very well,... (4 Replies)
I have a little code block (executing on AIX 7.1) that I cannot understand why the NOTFREE=0 does not appear to be assigned even though it goes through that block. This causes a unary operator issue.
#!/bin/bash
PLATFORM="AIX"
NEEDSPC=3000
set -x
if ; then
lsvg | grep -v rootvg | while... (6 Replies)
Discussion started by: port43
6 Replies
LEARN ABOUT MOJAVE
procsystime
procsystime(1m) USER COMMANDS procsystime(1m)NAME
procsystime - analyse system call times. Uses DTrace.
SYNOPSIS
procsystime [-acehoT] [ -p PID | -n name | command ]
DESCRIPTION
procsystime prints details on system call times for processes, both the elapsed times and on-cpu times can be printed.
The elapsed times are interesting, to help identify syscalls that take some time to complete (during which the process may have slept). CPU
time helps us identify syscalls that are consuming CPU cycles to run.
Since this uses DTrace, only users with root privileges can run this command.
OPTIONS -a print all data
-c print syscall counts
-e print elapsed times, ns
-o print CPU times, ns
-T print totals
-p PID examine this PID
-n name
examine processes which have this name
EXAMPLES
Print elapsed times for PID 1871,
# procsystime -p 1871
Print elapsed times for processes called "tar",
# procsystime -n tar
Print CPU times for "tar" processes,
# procsystime -on tar
Print syscall counts for "tar" processes,
# procsystime -cn tar
Print elapsed and CPU times for "tar" processes,
# procsystime -eon tar
print all details for "bash" processes,
# procsystime -aTn bash
run and print details for "df -h",
# procsystime df -h
FIELDS
SYSCALL
System call name
TIME (ns)
Total time, nanoseconds
COUNT Number of occurrences
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
procsystime will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO dtruss(1M), dtrace(1M), truss(1)version 1.00 Sep 22, 2005 procsystime(1m)