05-01-2011
I think you're doing the right thing by gravitating towards ksh internal commands. This can really speed up your script by avoiding external processes. But you should not worry about using extra lines of code to accomplish this. It is still much faster than the overhead of forking another process. And rememeber that ksh compiles as it runs just like perl. If those two statements are in a loop, they will be read once... not once per iteration.
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1. Shell Programming and Scripting
I try to use the pattern substitution operators as documented in the O'Reilley "Learning the Korn Shell" but it doesn't seem to work as advertised.
This works all right:
var='Regular expressions rules!'
$ echo ${var//e/#}
R#gular #xpr#ssions rul#s!
The docs says that using !(expr)... (5 Replies)
Discussion started by: ripat
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2. Shell Programming and Scripting
In the Korn shell is it possible to truncate a pattern like this: -
) ]]
So that it is not necessary to enter
8 times? (2 Replies)
Discussion started by: steadyonabix
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3. Shell Programming and Scripting
I've got a longish log file with content such as
Uplink traffic:
Downlink traffic:
I want to parse the log file and remove any line that contains the string "Uplink traffic:" at the beginning of the line, but only if the line following it beginnings with the string "Downlink traffic:" (in... (7 Replies)
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4. Shell Programming and Scripting
Hi everyone, and thank you for your help with this. I am VERY new with perl so all of your help is appreciated. I have tried google but as I don't know the proper terms to search for and could be daunting for a newbie scripter... I know this is very easy for most of you! Thanks!
I have a... (4 Replies)
Discussion started by: sinusoid
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5. Shell Programming and Scripting
Hello sorry for the probably simple question - searching about the forums and Internet, I have not found the answer.
Could you tell me please how to do a multiple pattern match with SED
So it would be SED searching for "PATTERN1" 'or' "PATTERN2" not 'and' if they happen to fall on the same... (4 Replies)
Discussion started by: lostincashe
4 Replies
6. Shell Programming and Scripting
Hi ,
I have a file which has multiple rows of data, i want to match the pattern for two columns and if both conditions satisfied i have to add the counter by 1 and finally print the count value. How to proceed...
I tried in this way...
awk -F, 'BEGIN {cnt = 0} {if $6 == "VLY278" &&... (6 Replies)
Discussion started by: aemunathan
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7. Shell Programming and Scripting
My example file is as given below:
conn=1 uid=oracle
conn=2 uid=db2
conn=3 uid=oracle
conn=4 uid=hash
conn=5 uid=skher
conn=6 uid=oracle
conn=7 uid=mpalkar
conn=8 uid=anarke
conn=9 uid=oracle
conn=1 op=-1 msgId=-1 - fd=104 slot=104 LDAPS connection from 10.10.5.6 to 10.18.6.5
conn=2... (3 Replies)
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8. Shell Programming and Scripting
I am facing a problem and I would be grateful if you can help me :wall:
I have a list of words like
And I have a datafile like
the box of
the box of tissues out of
of tissues out of
the book, the
the book, the pen and the
the pen and the
I want to find Patterns of “x.*x” where... (2 Replies)
Discussion started by: A-V
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9. Shell Programming and Scripting
Hi friends,
I have a some files in a directory. for example
856-abc
856-def
851-abc
945-def
956-abc
852-abc
i want to display only those files whose name starts with 856* 945* and 851* using a single pattern.
i.e
856-abc
856-def
851-abc
945-def
the rest of the two files... (2 Replies)
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10. Shell Programming and Scripting
Hi Guys,
I am trying to format my csv file. When I spool the file using sqlplus the single row output is wrapped on three lines.
Somehow I managed to format that file and finally i am trying to make the multiple line on single line.
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Discussion started by: RJSKR28
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dircmp(1) User Commands dircmp(1)
NAME
dircmp - directory comparison
SYNOPSIS
dircmp [-ds] [-w n] dir1 dir2
DESCRIPTION
The dircmp command examines dir1 and dir2 and generates various tabulated information about the contents of the directories. Listings of
files that are unique to each directory are generated for all the options. If no option is entered, a list is output indicating whether the
file names common to both directories have the same contents.
OPTIONS
The following options are supported:
-d Compares the contents of files with the same name in both directories and output a list telling what must be changed in the two
files to bring them into agreement. The list format is described in diff(1).
-s Suppresses messages about identical files.
-w n Changes the width of the output line to n characters. The default width is 72.
OPERANDS
The following operands are supported:
dir1 A path name of a directory to be compared.
dir2
USAGE
See largefile(5) for the description of the behavior of dircmp when encountering files greater than or equal to 2 Gbyte ( 2**31bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of dircmp: LC_COLLATE, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred. (Differences in directory contents are not considered errors.)
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWesu |
+-----------------------------+-----------------------------+
SEE ALSO
cmp(1), diff(1), attributes(5), environ(5), largefile(5)
SunOS 5.10 1 Feb 1995 dircmp(1)