After my previous thread, I think I found out what causes the long delays.
I run this program on several Linux computers, and the sometimes (after the file with the arrays becomes big) the fwrite takes between 100 ms to 900 ms.
This is very bad for me, as I want a timer to halt each 30 ms.... ... (5 Replies)
Hello,
I have a C program that takes anywhere from 5 to 100 arguments and I'd like to run it from a script that makes sure it doesnt take too long to execute. If the C program takes more than 5 seconds to execute, i would like the shell script to kill it and return a short message to the user. ... (3 Replies)
Hi all,
I wrote this shell script to validate filed numbers for input file. But it take forever to complete validation on a file. The average speed is like 9mins/MB.
Can anyone tell me how to improve the performance of a shell script?
Thanks (12 Replies)
Hi,
I am trying to login using ssh on Red Hat Linux 5 server,
The password appears immediately but after I enter the password it takes about 90 seconds to login completely.
Please suggest what changes require?
Regards,
Manoj (4 Replies)
Hello,
like the title says, how can i measure the time it takes to load a module in Linux, and how how can i measure the time it takes to load a statically compiled module.
/Best Regards Olle
---------- Post updated at 01:13 PM ---------- Previous update was at 11:54 AM ----------
For... (0 Replies)
We are running unix. After a reboot of the server we have found that changing password takes a long time. if type in passwd "username" you can type in the 1st instance of the password , press enter , then it will wait for about 3 minutes before bringing up the confirm password line typing it in... (4 Replies)
Hi,
we currently having a issue where when we send jobs to the server for the application lawson, it is taking a very long time to complete. here are the last few lines of the database log.
2012-09-18-10.35.55.707279-240 E244403536A576 LEVEL: Warning
PID : 950492 ... (1 Reply)
Hi,
I wish to check the return value for wget $url.
However, some urls are designed to take 45 minutes or more to return.
All i need to check if the URL can be reached or not using wget.
How can i get wget to return the value in a few seconds ? (8 Replies)
Hi,
I am trying to search for a Directory called "mont" under a directory path "/opt/app/var/dumps"
Although "mont" is in the very parent directory called "dumps" i.e "/opt/app/var/dumps/mont" and it can never be inside any Sub-Directory of "dumps"; my below find command which also checks... (5 Replies)
It takes 6 hrs for a 90 GB zip file that i am copying / transferring from serverA onto serverB.
scp user1@serverA:/opt/setup/cash.zip .
Output:
cash.zip 21% 19GB 4.7MB/s 4:11:46 ETA
uname -a
SunOS serverB 5.11 11.2 sun4v sparc sun4vCan you please suggest if i could do... (11 Replies)
Discussion started by: mohtashims
11 Replies
LEARN ABOUT PHP
look
LOOK(1) BSD General Commands Manual LOOK(1)NAME
look -- display lines beginning with a given string
SYNOPSIS
look [-bdf] [-t termchar] string [file ...]
DESCRIPTION
The look utility displays any lines in file which contain string as a prefix.
If file is not specified, the file /usr/share/dict/words is used, only alphanumeric characters are compared and the case of alphabetic char-
acters is ignored.
The following options are available:
-b, --binary
Use a binary search on the given word list. If you are ignoring case with -f or ignoring non-alphanumeric characters with -d, the
file must be sorted in the same way. Please note that these options are the default if no filename is given. See sort(1) for more
information on sorting files.
-d, --alphanum
Dictionary character set and order, i.e., only alphanumeric characters are compared.
-f, --ignore-case
Ignore the case of alphabetic characters.
-t, --terminate termchar
Specify a string termination character, i.e., only the characters in string up to and including the first occurrence of termchar are
compared.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of the look utility. Their effect is described in environ(7).
FILES
/usr/share/dict/words the dictionary
EXIT STATUS
The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were found, and >1 if an error occurred.
COMPATIBILITY
The original manual page stated that tabs and blank characters participated in comparisons when the -d option was specified. This was incor-
rect and the current man page matches the historic implementation.
look uses a linear search by default instead of a binary search, which is what most other implementations use by default.
The -a and --alternative flags are ignored for compatibility.
SEE ALSO grep(1), sort(1)HISTORY
A look utility appeared in Version 7 AT&T UNIX.
BUGS
Lines are not compared according to the current locale's collating order. Input files must be sorted with LC_COLLATE set to 'C'.
BSD July 17, 2004 BSD