Where (and why) do you need those escaped $s? What do you want to achieve? There might be easier/better suited ways to get at it if we knew the entire picture.
For just your question, try
on unix AIX5.3, we run a scripts by entering the
script name on the command line and sometimes
we get a not found error and then we put ./ in front on the name
and it runs.
Why? :confused: (3 Replies)
Hello, Im writing a script that works by recursively going into directories with find. But I have some directories that have spaces in them.. so I need to parse the variables to add a backslash before the spaces.
Im not exactly sure how how to do this in bash, and honestly I dont think I know... (3 Replies)
I am facing a problem which is weblogic convert to CGI method.
The original process is -> the Front End is using Visual C++, and backend is using WEBLOGIC the based programming is JAVA.
The method for Weblogic to receive the request from Front end (Visual C++) thru URL.
for example :... (0 Replies)
Hi,
Can anybody help me how to add a word in front of a line in a file.Actually it is bit tricky to add a word. i will give a sample for this:
Input :
1110001 ABC DEF
1110001 EFG HIJ
1110001 KLM NOP
1110002 QRS RST
1110002 UVW XYZ
Output:
%HD% 1110001 ABC DEF
%DT% 1110001 EFG HIJ... (4 Replies)
Hello,
Did any one know how to use perl join line and add | in front
Input-->
timestamp=2009-11-10-04.55.20.829347;
a;
b;
c;
ddaa;
timestamp=2009-11-10-04.55.20.829347;
aa;
bb;
cc;
Output-->
... (2 Replies)
Hi All,
I know this has been discussed a lot but still I need some more answers. I am running this is ksh on AIX 5.3
I believe putting a "." in front of the script will start a new shell, is that correct??
I have a script which override some PATH variables and it does not do that... (3 Replies)
Hi ,
how to add the single digit to front of the word and front of the lines in the one file with compare pattern file and get digit. like example
pattern file pattern.txt
pattern num
bala 2
raja 3
muthu 4
File Name: chennai.dat
muthu is good boy
raja is bad boy
selvam in super... (6 Replies)
Hi
I've one file full of paths of certain files and I want to add some extra file words in front of all the paths. for eg:
i have a file name test.txt which show some details only..
024_hd/044/0344eng.txt
035_bv/222/editor.jpg
here I want to add /usr/people/indiana/ infront of all the... (4 Replies)
I am just trying to add specific text in front of a ${variant} but can not seem to get the syntax correct.
I have tried sed -i '$a NM_004004.5' ${variant} and printf "NM_004004.5:%s\n" ${variant} with no luck.
Thank you :). (7 Replies)
Hi,
Hope you are all doing fine.
The problem today i faced during my coding was i wanted to add a space equals to a tab character in front of all the lines which i am cat using tee command.
Main file contents
mainfile
... (4 Replies)
Discussion started by: mad man
4 Replies
LEARN ABOUT DEBIAN
ionice
IONICE(1) User Commands IONICE(1)NAME
ionice - set or get process I/O scheduling class and priority
SYNOPSIS
ionice [-c class] [-n level] [-t] -p PID...
ionice [-c class] [-n level] [-t] command [argument...]
DESCRIPTION
This program sets or gets the I/O scheduling class and priority for a program. If no arguments or just -p is given, ionice will query the
current I/O scheduling class and priority for that process.
When command is given, ionice will run this command with the given arguments. If no class is specified, then command will be executed with
the "best-effort" scheduling class. The default priority level is 4.
As of this writing, a process can be in one of three scheduling classes:
Idle A program running with idle I/O priority will only get disk time when no other program has asked for disk I/O for a defined grace
period. The impact of an idle I/O process on normal system activity should be zero. This scheduling class does not take a priority
argument. Presently, this scheduling class is permitted for an ordinary user (since kernel 2.6.25).
Best-effort
This is the effective scheduling class for any process that has not asked for a specific I/O priority. This class takes a priority
argument from 0-7, with a lower number being higher priority. Programs running at the same best-effort priority are served in a
round-robin fashion.
Note that before kernel 2.6.26 a process that has not asked for an I/O priority formally uses "none" as scheduling class, but the
I/O scheduler will treat such processes as if it were in the best-effort class. The priority within the best-effort class will be
dynamically derived from the CPU nice level of the process: io_priority = (cpu_nice + 20) / 5.
For kernels after 2.6.26 with the CFQ I/O scheduler, a process that has not asked for an I/O priority inherits its CPU scheduling
class. The I/O priority is derived from the CPU nice level of the process (same as before kernel 2.6.26).
Realtime
The RT scheduling class is given first access to the disk, regardless of what else is going on in the system. Thus the RT class
needs to be used with some care, as it can starve other processes. As with the best-effort class, 8 priority levels are defined
denoting how big a time slice a given process will receive on each scheduling window. This scheduling class is not permitted for an
ordinary (i.e., non-root) user.
OPTIONS -c, --class class
Specify the name or number of the scheduling class to use; 0 for none, 1 for realtime, 2 for best-effort, 3 for idle.
-n, --classdata level
Specify the scheduling class data. This only has an effect if the class accepts an argument. For realtime and best-effort, 0-7 are
valid data (priority levels).
-p, --pid PID...
Specify the process IDs of running processes for which to get or set the scheduling parameters.
-t, --ignore
Ignore failure to set the requested priority. If command was specified, run it even in case it was not possible to set the desired
scheduling priority, which can happen due to insufficient privileges or an old kernel version.
-h, --help
Display help and exit.
-V, --version
Display version information and exit.
EXAMPLES
# ionice -c 3 -p 89
Sets process with PID 89 as an idle I/O process.
# ionice -c 2 -n 0 bash
Runs 'bash' as a best-effort program with highest priority.
# ionice -p 89 91
Prints the class and priority of the processes with PID 89 and 91.
NOTES
Linux supports I/O scheduling priorities and classes since 2.6.13 with the CFQ I/O scheduler.
AUTHORS
Jens Axboe <jens@axboe.dk>
Karel Zak <kzak@redhat.com>
AVAILABILITY
The ionice command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux July 2011 IONICE(1)