05-27-2008
What have you tried so far?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is it possible to process multiple variables in a single sed command?
I have the following ksh with three variables and I want to search for all variables which start with "var" inside input.txt.
I tired "$var$" but it just prints out everyting in input.txt and does not work.
$ more test.ksh... (5 Replies)
Discussion started by: stevefox
5 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I would like to know given that I have 3 columns.
Let say I have first 3 columns to do operation and these operation output is printed out each line by line using AWK and associative array.Currently in the output file, I do a sort by -r for the operation output.
The problem comes to... (1 Reply)
Discussion started by: ahjiefreak
1 Replies
3. Shell Programming and Scripting
Hi friends,
I have data in flat file as following, first filed is the customer number. We have almost 50-100 customers in the system
100 ABC A123
100 BVC D234
100 BNC N324
200 CBC A122
200 AVC D294
200 HNC N324
300 GBC A173
300 FVC D234
300 DNC N344
I want to split the file and... (5 Replies)
Discussion started by: monicasgupta
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4. Shell Programming and Scripting
Hello, I need a smart sed command that can take any of the following two as an input and give below mentioned output. As you can see, I am trying to convert some C code
INPUT:
struct abc_sample1 {
char myString;
UINT16 myValue1;
... (2 Replies)
Discussion started by: SiftinDotCom
2 Replies
5. Shell Programming and Scripting
I have a rather complicated search and replace I need to do among several dozen files and over a hundred occurrences. My site is written in PHP and throughout the old code, you will find things like
die("Operation Aborted due to.....");
For my new design skins for the site, I need to get... (2 Replies)
Discussion started by: UCCCC
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6. Shell Programming and Scripting
Hi Forum.
I need a script to wait for all multiple trigger files to be present or else go to sleep for 10 seconds (Number of trigger files can vary). I tried to search on the forum but was not able to find a solution.
I found this code on this forum but it's not working as expected:
for... (6 Replies)
Discussion started by: pchang
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7. Shell Programming and Scripting
Hi Folks,
I was given a task to append three IP's at the end of a specific (and unique) line within a file on multiple servers.
I was not able to do that with the help of a script. All I could was:
for i in server1 server2 server3 server4
do
ssh $i
done
I know 'sed' could be used to... (5 Replies)
Discussion started by: momin
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8. UNIX for Dummies Questions & Answers
Hello,
There is a log file A.log where new lines are getting added every minute.
When ever any new lines are getting added in to A , the same lines needs to be appended to B.log
I need to append these newly added lines to end of another file B through a shell script. I tried CAT but its... (2 Replies)
Discussion started by: twisterboy
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9. Shell Programming and Scripting
Hi,
I have a file containing list of strings like
i:
Pink
Yellow
Green
and I have file having list of file names in a directory
j :
a
b
c
d
Where j contains of a ,b,c,d are as follows
a:
Pink (3 Replies)
Discussion started by: madabhg
3 Replies
10. Shell Programming and Scripting
Hi,
I want to grep multiple patterns from multiple files and save to multiple outputs. As of now its outputting all to the same file when I use this command.
Input : 108 files to check for 390 patterns to check for. output I need to 108 files with the searched patterns.
Xargs -I {} grep... (3 Replies)
Discussion started by: Diya123
3 Replies
SLEEP(1) BSD General Commands Manual SLEEP(1)
NAME
sleep -- suspend execution for an interval of time
SYNOPSIS
sleep seconds
DESCRIPTION
The sleep utility suspends execution for a minimum of seconds. It is usually used to schedule the execution of other commands (see EXAMPLES
below).
Note: The NetBSD sleep command will accept and honor a non-integer number of specified seconds. This is a non-portable extension, and its
use will nearly guarantee that a shell script will not execute properly on another system.
When the SIGINFO signal is received, the estimate of the amount of seconds left to sleep is printed on the standard output.
EXIT STATUS
The sleep utility exits with one of the following values:
0 On successful completion, or if the signal SIGALRM was received.
>0 An error occurred.
EXAMPLES
To schedule the execution of a command for 1800 seconds later:
(sleep 1800; sh command_file >& errors)&
This incantation would wait half an hour before running the script command_file. (See the at(1) utility.)
To reiteratively run a command (with csh(1)):
while (1)
if (! -r zzz.rawdata) then
sleep 300
else
foreach i (*.rawdata)
sleep 70
awk -f collapse_data $i >> results
end
break
endif
end
The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
courteously by sleeping for 70 seconds in between each awk job.
SEE ALSO
at(1), nanosleep(2), sleep(3)
STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
BSD
August 13, 2011 BSD