06-09-2010
its version 5. not sure why it is misbehaving.
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1. Programming
I have a file which contains numbers as follows:
1234 9876 6789 5677 3452
9087 4562 1367 2678 7891
I need to remove the empty spaces and add commas between the numbers like:
1234,9876,6789,5677,3452,
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Hi,
I want to Initialize a String with 50 spaces. I can do that by
ex: Var1=" "
But i dont want to do in this way?
Is there any unix command where i can specify no of spaces to a varaible?
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Hi suppose I have a csv file like this
count,1977,1978,1979
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Hi All,
If anybody could help me with my scenario here. I have a statement file. Example of some content:
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5. Shell Programming and Scripting
Is there some easy way to trim empty fields but only in a given range?
for example say I have csv data that looks like this:
apple,,,Granysmith,,2.50,,TimmysGrocers
Pear,Bartlett,,,,,Park,
peach,,,,Peento,3.00,Garden,TimmysGrocers
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Hi Everyone,
I am looking for neat way to grep a non-empty string that basically contains a hostname, which might be in FWDN form or without the domain, for example:
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I'm trying to do something pretty simple but its appears more complicated than expected... I've lines in a text file, separated by the comma and that I want to output to another file, without the first field.
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8. Shell Programming and Scripting
awk 'BEGIN{
if('"$CATE"'<'"${WARN}"')
printf ("%s", "'"`Kfunc "" ; break`"'")
else if (('"${CATE}"'>='"${WARN}"') && ('"${CATE}"'<'"${CRIT}"'))
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I am trying to use awk to identify and print out records in fields that are empty along with which line they are in. I hope the awk below is close, it runs but nothing results. Thank you :).
awk
awk -F'\t' 'FNR==NR ~ /^*$/ { print "NR is empty" }' file
file
123 GOOD ID 45... (3 Replies)
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Hello
I have a file like this
a,b,c,1,2,3,d,e,f,,,,g,h,i,,,,j,k,l
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LEARN ABOUT NETBSD
poweroff
REBOOT(8) BSD System Manager's Manual REBOOT(8)
NAME
reboot, poweroff, halt -- restarting, powering down and stopping the system
SYNOPSIS
halt [-dlnpqvxz]
poweroff [-dlnqvxz]
reboot [-dlnqvxz] [arg ...]
DESCRIPTION
The poweroff, halt and reboot utilities flush the file system cache to disk, send all running processes a SIGTERM, wait for up to 30 seconds
for them to die, send a SIGKILL to the survivors and, respectively, power down, halt or restart the system. The action is logged, including
entering a shutdown record into the login accounting file and sending a message via syslog(3).
The options are as follows:
-d Create a dump before halting or restarting. This option is useful for debugging system dump procedures or capturing the state of a
corrupted or misbehaving system.
-l Suppress sending a message via syslog(3) before halting or restarting.
-n Do not flush the file system cache. This option should be used with extreme caution. It can be used if a disk or a processor is on
fire.
-p Attempt to powerdown the system. If the powerdown fails, or the system does not support software powerdown, the system will halt.
This option is only valid for halt.
-v To enable verbose messages on the console, pass the boothowto(9) flag AB_VERBOSE to reboot(2).
-x To enable debugging messages on the console, pass the boothowto(9) flag AB_DEBUG to reboot(2).
-z To silence some shutdown messages on the console, pass the boothowto(9) flag AB_SILENT to reboot(2).
-q Do not give processes a chance to shut down before halting or restarting. This option should not normally be used.
If there are any arguments passed to reboot they are concatenated with spaces and passed as bootstr to the reboot(2) system call. The string
is passed to the firmware on platforms that support it.
Normally, the shutdown(8) utility is used when the system needs to be halted or restarted, giving users advance warning of their impending
doom.
SEE ALSO
reboot(2), syslog(3), utmp(5), boot(8), init(8), rescue(8), shutdown(8), sync(8)
HISTORY
A reboot command appeared in Version 6 AT&T UNIX.
The poweroff command first appeared in NetBSD 1.5.
CAVEATS
Once the command has begun its work, stopping it before it completes will probably result in a system so crippled it must be physically
reset. To prevent premature termination, the command blocks many signals early in its execution. However, nothing can defend against delib-
erate attempts to evade this.
This command will stop the system without running any shutdown(8) scripts. Amongst other things, this means that swapping will not be dis-
abled so that raid(4) can shutdown cleanly. You should normally use shutdown(8) unless you are running in single user mode.
BUGS
The single user shell will ignore the SIGTERM signal. To avoid waiting for the timeout when rebooting or halting from the single user shell,
you have to exec reboot or exec halt.
BSD
February 16, 2011 BSD