09-15-2011
Hello Guys !
i'm new to shell so please if anyone could explain the following things in detail
1> F"[,.?\! ]" why we used it? and what all these sign (,.?\!) means here can we add more?
2> what are the two for loops used for and how they work?
3> what is NF and END?
thank you guys
BR,
Ewa
---------- Post updated at 01:32 PM ---------- Previous update was at 07:23 AM ----------
Hello Guys !
i'm new to shell so please if anyone could explain the following things in detail
1> F"[,.?\! ]" why we used it? and what all these sign (,.?\!) means here can we add more?
2> what are the two for loops used for and how they work?
3> what is NF and END?
thank you guys
BR,
Ewa
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I have a directory with a couple of thousand logs in it. The log files are created every 5 minutes. I want to search these logs grep for a specific sting and more importantly print the name of the files where that sting was found.
e.g.
all logs begin om20020927
what I have been... (4 Replies)
Discussion started by: warrend
4 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I'm rather new to Unix and I'm trying to write a simple script to search through a dictionary for words based on the letters a user would pass as arguments to the script.
Now I have the searching part done. However, the one thig that still eludes me is that I want to only keep the... (4 Replies)
Discussion started by: GADO
4 Replies
3. Shell Programming and Scripting
Dear friends,
I have one more query,
incase a file contains multiple tags of same name, then how to get the required string between the tags, in which the string begins with "O/M"
i.e., file1.txt contains following text(please note that all the following tags are in single line)... (6 Replies)
Discussion started by: swamymns
6 Replies
4. Shell Programming and Scripting
Hi,
Need to extract a string from one file and search the same in other files.
Ex:
I have file1 of hundred lines with no delimiters not even space.
I have 3 more files.
I should get 1 to 10 characters say substring from each line of file1 and search that string in rest of the files and get... (1 Reply)
Discussion started by: mohancrr
1 Replies
5. UNIX for Dummies Questions & Answers
Hi ...
I have a string variable
STR = "This is a test message"
I have a file abc.txt that I am searching for the occurence of the string STR ...
I am using the command in a script
cat abc.txt | grep $STR
It identifies each space as a seperator and prints word by word.
How to... (2 Replies)
Discussion started by: mattrix
2 Replies
6. UNIX for Dummies Questions & Answers
I need to search for a specific string in a file and if this string exist I need to replace it with something else. I am not sure how I could do this, using an if statement. (2 Replies)
Discussion started by: ROOZ
2 Replies
7. Shell Programming and Scripting
Hi Guys...
I want to search for each file that contains a particular string.
e.g find . -print | xargs grep -i string_name
Now my issue is the files that I search in are gzipped.
Will I be able to find the string, using the above commands, even if the files are gzipped?
Please... (2 Replies)
Discussion started by: Phuti
2 Replies
8. Shell Programming and Scripting
hello, i'm a novice on bsh scripting so thanks for any help here
basically i have a shell var $x that looks like this
> echo $x
nabc1234:!:73394:17155:Gary Mason:/home/garym:/bin/ksh
and i'm trying to keep the first 8 characters and the text from the 4th : to the 5th :
i've been trying... (9 Replies)
Discussion started by: sasglm
9 Replies
9. Shell Programming and Scripting
Hi all,
I have some data in the form of
adc|nvhs|nahssn|njadnk|nkfds
in the above data i need to write a script so thet it will append "|||" to the third occurnace in the string ..... the outout should look like
adc|nvhs|nahssn||||njadnk|nkfds
Thanks,
Firestar. (6 Replies)
Discussion started by: firestar
6 Replies
10. Shell Programming and Scripting
Hi Guys,
So im trying to search for the most recent occurance of a string in the most recently updated .log file in a certain directory. The string i am searching for is a value, now if this value is greater than 800 i would like an email sent out with some text (blah blah blah).
This is what... (7 Replies)
Discussion started by: hello_world
7 Replies
LEARN ABOUT OPENSOLARIS
break
break(1) User Commands break(1)
NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop
SYNOPSIS
sh
break [n]
continue [n]
csh
break
continue
ksh
*break [n]
*continue [n]
ksh93
+break [n]
+continue [n]
DESCRIPTION
sh
The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.
The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.
csh
The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.
The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.
ksh
The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is
greater than the number of enclosing loops, the outermost enclosing loop shall be exited.
The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.
On this manual page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a
variable assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file
name generation are not performed.
ksh93
break is a shell special built-in that exits the smallest enclosing for, select, while, or until loop. It also exits the nth enclosing loop
if n is specified. Execution continues at the command following the loop or loops.
If n is specified, it must be a positive integer >=1. If n is larger than the number of enclosing loops, the last enclosing loop is exited.
continue is a shell special built-in that continues execution at the top of the smallest enclosing for, select, while, or until loop, if
any; or of the top of the nth enclosing loop if n is specified.
If n is specified, it must be a positive integer >=1. If n is larger than the number of enclosing loops, the last enclosing loop is used.
On this manual page, ksh93(1) commands that are preceded by one or two + symbols are special built-in commands and are treated the follow-
ing ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Built-in commands are not valid function names.
5. Words following a command preceded by ++ that are in the format of a variable assignment are expanded with rules as a variable
assignment. This means that tilde substitution is performed after the = sign and field splitting and file name generation are
not performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), exit(1), ksh(1), ksh93(1), sh(1), attributes(5)
SunOS 5.11 8 Apr 2008 break(1)