If it doesn't exactly what you want twiddle yourself with it. Here is how to do it:
The s-command (s is for substitute) is a simple sed-device:
s/<pattern>/<new>/
will change every first occurence of <pattern> in a line with <new>. For example:
s/dog/cat/
will change the first occurrence of the word "dog" on every line to the word "cat".
Notice that only the first occurrence is changed, hence the second "dog" still stands there. If you want every occurrence to be changed use the "g" option for the s-command:
s/dog/cat/g
This would change the second (and any other) occurrence in the second line too.
sed and awk are mighty tools and you should put much effort in learning them when you work in a Unix environment. I recommend Dale Doughertys book "sed & awk" (O'Reilly) as simply the best book i know on this topic.
I'm not very familiar with the ssh command. When I tried to set a variable and then echo its value on a remote machine via ssh, I found a problem. For example,
$ ITSME=itsme
$ ssh xxx.xxxx.xxx.xxx "ITSME=itsyou; echo $ITSME"
itsme
$ ssh xxx.xxxx.xxx.xxx 'ITSME=itsyou; echo $ITSME'
itsyou
$... (3 Replies)
Hi guys, I have a sed line in double quotes which works fine, but I want it to be in single quotes
here is the sed line
sed "/abc_def/s/\'.*\'/\'\${abc_def}\'/"
can some one give the equivalent to the above script in single quotes
Thanks a ton (5 Replies)
Hi,
I am using the following command to create a log file.
echo "`date` Starting the workflow" >> MYLOG_`date '+%d%m%Y'`.log
My application (Informatica) takes the above command and issues the following to the UNIX server.
sh -c "echo "`date` Starting the workflow" >> MYLOG_`date... (1 Reply)
Unix superusers,
I am new to unix but would like to learn more about grep. I am very familiar with regular expressions as i have used them for searching text files in windows based text editors. Since I am not very familiar with Unix, I dont understand when one should use GREP with the... (2 Replies)
I have one file a.txt as below.
a.txt
"aaas","111111","ewwee32e","deee333",
"aaas","111111","ewwee32e","deee333",
"aaas","111111","ewwee32e","deee333",
"aaas","111111","ewwee32e","deee333",
I want to write a script to process a.txt and want the output as below in different file as below -... (2 Replies)
Hi,
I have data as
"01/22/97-"aaaaaaaaaaaaaaaaa""aaa""aabbbbbbbbcccccc""zbcd""dddddddddeeeeeeeeefffffff"
I want to remove only the Consequitive double quotes and not the one which occurs single.
My O/P must be ... (2 Replies)
Hi,
Trying to change the prompt. I have the following code.
export PS1='
<${USER}@`hostname -s`>$ '
The hostname is not displayed
<abc@`hostname -s`>$ uname -a
AIX xyz 1 6 00F736154C00
<adcwl4h@`hostname -s`>$
If I use double quotes, then the hostname is printed properly but... (3 Replies)
Hi,
I am little new to forum and new on unix side. I have a small issue below:
I am reading a file that has 5 columns something like below.
col1,col2,col3,col4,col5
Some records are having double quoted values something like below:
"value1","value2","value3","value4","value5"
I need... (8 Replies)
Hi Froum.
I have tried in vain to find a solution for this problem - I'm trying to replace any double quotes within a quoted string with a single quote, leaving everything else as is.
I have the following data:
Before:
... (32 Replies)
Hi All,
I'm unable to load the data using sql loader where there are double quotes within the double quotes As these are optionally enclosed by double quotes.
Sample Data :
"221100",138.00,"D","0019/1477","44012075","49938","49938/15043000","Television - 22" Refurbished - Airwave","Supply... (6 Replies)
Discussion started by: mlavanya
6 Replies
LEARN ABOUT DEBIAN
ns_makepath
Ns_Pathname(3aolserver) AOLserver Library Procedures Ns_Pathname(3aolserver)__________________________________________________________________________________________________________________________________________________NAME
Ns_HomePath, Ns_LibPath, Ns_MakePath, Ns_ModulePath, Ns_NormalizePath, Ns_PathIsAbsolute - Pathname procedures
SYNOPSIS
#include "ns.h"
char *
Ns_HomePath(Ns_DString *dest, ...)
char *
Ns_LibPath(Ns_DString *dest, ...)
char *
Ns_MakePath(Ns_DString *dest, ...)
char *
Ns_ModulePath(Ns_DString *dest, char *server, char *module, ...)
char *
Ns_NormalizePath(Ns_DString *dsPtr, char *path)
int
Ns_PathIsAbsolute(char *path)
_________________________________________________________________DESCRIPTION
These functions operate on file pathnames. They work with Unix and Windows pathnames on their respective hosts.
Ns_HomePath(dest, ...)
Construct a path name relative to the home directory of the server. The full path is constructed by appending the library directory
followed by each of the variable number of string elements after the dest argument. The elements will be separated by a / charac-
ter. The list must be terminated with a NULL string.
Ns_LibPath(dest, ...)
Construct a path name relative to the library directory of the server, normally the lib/ subdirectory of the home directory. The
full path is constructed by appending the library directory followed by each of the variable number of string elements after the
dest argument. The elements will be separated by a / character. The list must be terminated with a NULL string.
Ns_MakePath(dest, ...)
Construct a path name from a list of path elements. The Ns_MakePath function constructs a path name by appending a list of path ele-
ments to the given Ns_DString. The path elements are separated by single slashes, and the resulting path name is appended to the
given Ns_DString. The last argument needs to be NULL to indicate the end of the argument list.
Ns_ModulePath(dest, char *server, char *module, ...)
Construct a server and/or module specific pathname relative to the server home directory. The path in constructed by first append-
ing the server home directory. Next, if the server argument is not NULL, "server/servere appended to the destination and if the
module argument is not NULL, "module/module" will be appended. Finally, all other string elements, if any, will be appended to the
destination with separating / characters. The list must be terminated with a NULL string.
Ns_NormalizePath(dsPtr, path)
Normalize a path name. This function removes any extraneous slashes from the path and resolves "." and ".." references. The result
is appended to the given Ns_DString. The following code appends "/dog" to the Ns_DString:
Ns_NormalizePath(&ds,
"/dog/cat/../../rat/../../dog//mouse/..");
Ns_PathIsAbsolute(path)
Check for an absolute path name. Return NS_TRUE if the path is absolute and NS_FALSE otherwise. Under Unix, an absolute path starts
with a "/". On Windows, it starts with a drive letter followed immediately by a ":".
SEE ALSO nsd(1), info(n)
KEYWORDS AOLserver 4.0 Ns_Pathname(3aolserver)