What does : do in this instance

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Grep the only instance name

Hi, I want to get the only application name from the server. Ex: if i give $ ps -ef | grep bw. It will show all BW process with entire path. It will little confuse to list out the process. Can anyone have syntax to get only the instance name. I need this for be, hawk,ems also. Please...

2. Shell Programming and Scripting

Keep the last instance of the record

3. Red Hat

Apache instance

Hi , Maximum How many instances of apache can we run in one box?

4. Shell Programming and Scripting

Sed on first instance only

Hi, I've been trying to figure this one out and found a post about this on the forum here but the solution didn't seem to work for me. Basically what I have is a file that looks something like: stuff morestuff 0 otherthing 0 etc I want to substitute for the 0 but what I want to...

5. Shell Programming and Scripting

matching first instance of FS

Hi All, I have a property in a file as: property=value=a If I use FS="=" then I want only first = to be considered as field separator and remaining as value echo -e "property=value=a" | awk -F= '{print $2}' ie my $2 should be value=a Can anyone please help me with this. I need it in...

6. Shell Programming and Scripting

replace first instance(not first instance in line)

Alright, I think I know what I am doing with sed(which probably means I don't). But I cant figure out how to replace just the first occurance of a string. I have tried sed, ed, and grep but can't seem to figure it out. If you have any suggestions I am open to anything!

7. Shell Programming and Scripting

Single Instance

Hi, I have a script. I want only one instance of the script to be running at any point of the time. How can I do it. what would be the exact format of the ps command for doing this. For example the name of my script is "Inst.sh" Thanx in advance

8. Linux

OTRS instance

hi frnds here i m trying to configure OTRS instance but i m getting the following error message while runnning through browser. I m writing the following http://192.168.1.55:8080/otrs2/index.pl " #!/usr/bin/perl -w...

9. UNIX for Dummies Questions & Answers

Copy Db Instance

I need to copy my Live Db Instance to my Test Db Instance Can somebody please tell me the easiest way to go about this It is an Informix Database running on HP-UX Thanks

10. UNIX for Dummies Questions & Answers

finding first instance

I have a file with 3 columns. Often the first two will hold the same values and the third may differ. I only want one row for each. i.e. aaa,bbb,1 aaa,bbb,2 aaa,bbb,3 xxx,yyy,1 xxx,yyy,2 zzz,rrr,5 Should be aaa,bbb,1 xxx,yyy,1 zzz,rrr,5 I just want the first instance of...

LEARN ABOUT OSF1

false

true(1) 						      General Commands Manual							   true(1)

NAME

       true, false - Returns a standard exit value

SYNOPSIS

       true

       false

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       true:  XCU5.0

       false:  XCU5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       The true command returns a 0 (zero) exit value. The false command returns a nonzero exit value. These commands are usually used in input to
       shell commands.

NOTES

       The special built-in utility : (colon) is sometimes more efficient than the true command.

EXIT STATUS

       [Tru64 UNIX]  The nonzero value returned by the false command may vary from system to system.

EXAMPLES

       To construct a loop in a shell procedure, enter: while true do	   date      sleep 60 done

       This procedure displays the date and time once a minute.  To stop it, press the Interrupt key sequence.

SEE ALSO

       Commands:  csh(1), ksh(1), Bourne Shell sh(1b), POSIX shell sh(1p)

       Standards:  standards(5)

																	   true(1)

Shell Programming and Scripting