Hello,
I would like to dual subtitutes variables.
I tried
$serv="combo"
combo_TYPE="mop"
TYPENAME="$serv_TYPE"
Now, I'd like to get "mop" from TYPENAME
echo "${${TYPENAME}}"
I have a bad substitution error
:) (1 Reply)
This is the code and I'm wondering why line 14: a = ... and line 16: b = ... is wrong.
This is the first time I've tried to use this. Please help me.
#include <stdio.h>
#include <math.h>
// The link and how the double pow is used.
//
// http://www.nextdawn.nl/c-reference/pow.php
//... (2 Replies)
hey all,
i made a simple .sh like this:
echo "<style media="screen" type="text/css">@import url("main.css");</style>"
but the output is:
<style media=screen type=text/css>@import url(main.css);</style>
i want to keep double-quotes, can anyone help me?
thanks (3 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)
file1 contents:
jandoe1
johndoe1
file2 contents:
jandoe
johndoe
my output file names file3, and has contents as:
This is jandoe1
my script:
cat file1 | while read line1
cat file2 | while read line2
do
do
sed -e 's/${line1}/${line2}/g' file3 > file3
done
done (5 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 Team,
I have the following statement in my script
"chgrp dw $$DSSDATW5/W5DW_RUNNING.out"
Which throws the error "chgrp: 50528606DSSDATW5/W5DW_RUNNING.out: No such file or directory"
Can you please let me know what does this $$ refers to (2 Replies)
Hi All ,
We have source data file as csv file and since data could contain commas ,each attribute is quoted into double quotes.However problem is that some of the attributa data also contain double quotes which is converted to double double quote while creating csv file
XLs data :
... (2 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)
Hi All,
I have made a forloop as given below.
if ]; then
echo -e "serv_AAA_DS.ldif file created and will be splitted into 8 smaller files for ldapadd \n"
sh ./file_splitter.sh
for (( w=1; w <= 8; ++w ))
do
nohup ldapadd -x -c -h PL0 -p 389 -D "$LDAP_USER" -w... (8 Replies)
Discussion started by: Kamesh G
8 Replies
LEARN ABOUT LINUX
exec
EXEC(P) POSIX Programmer's Manual EXEC(P)
NAME
exec - execute commands and open, close, or copy file descriptors
SYNOPSIS
exec [command [argument ...]]
DESCRIPTION
The exec utility shall open, close, and/or copy file descriptors as specified by any redirections as part of the command.
If exec is specified without command or arguments, and any file descriptors with numbers greater than 2 are opened with associated redi-
rection statements, it is unspecified whether those file descriptors remain open when the shell invokes another utility. Scripts concerned
that child shells could misuse open file descriptors can always close them explicitly, as shown in one of the following examples.
If exec is specified with command, it shall replace the shell with command without creating a new process. If arguments are specified,
they shall be arguments to command. Redirection affects the current shell execution environment.
OPTIONS
None.
OPERANDS
See the DESCRIPTION.
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
None.
ASYNCHRONOUS EVENTS
Default.
STDOUT
Not used.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
If command is specified, exec shall not return to the shell; rather, the exit status of the process shall be the exit status of the program
implementing command, which overlaid the shell. If command is not found, the exit status shall be 127. If command is found, but it is not
an executable utility, the exit status shall be 126. If a redirection error occurs (see Consequences of Shell Errors ), the shell shall
exit with a value in the range 1-125. Otherwise, exec shall return a zero exit status.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
Open readfile as file descriptor 3 for reading:
exec 3< readfile
Open writefile as file descriptor 4 for writing:
exec 4> writefile
Make file descriptor 5 a copy of file descriptor 0:
exec 5<&0
Close file descriptor 3:
exec 3<&-
Cat the file maggie by replacing the current shell with the cat utility:
exec cat maggie
RATIONALE
Most historical implementations were not conformant in that:
foo=bar exec cmd
did not pass foo to cmd.
FUTURE DIRECTIONS
None.
SEE ALSO
Special Built-In Utilities
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE /The Open Group 2003 EXEC(P)