Your problem is explained quite easily and quite often in these forums: piped commands are executed in a subshell, variables of which cannot get handed back to the calling shell. You can use temp files as hanson44 showed, you could use sth. like process substitution (should your shell allow for that), or you could try to print your results to stdout so they can be assigned to shell variables by command substitution. Tr ysth. like
and use command substitution $(...) for the var assignment.
Hi,
I have a file like this:
tag1:value1
tag2:value2
tag3:value3
tag1:value1
tag2:value2
tag3:value3
tag1:value1
tag2:value2
tag3:value3
and what i want is:
value1 value2 value3
value1 value2 value3 (15 Replies)
hi all,
i have variables a and b with values, like
a="/var/tmp/new.sh /var/tmp/new2.sh"
b="/TEST"
how i need to append the value "/TEST" before the values for the variable "a" so that i get the output as
/TEST/var/tmp/new.sh /TEST/var/tmp/new2.sh
plz help me
Regards,
NG (2 Replies)
Ok. I for the life of me cant figure out how to do this. I need Help. So here is what I'm trying to do. I have a block of text. They are FIPS codes for counties. Below is the block. There are probably a few ways to do this. The first line starting with ARC021....... this line is a list of... (2 Replies)
i/o file:
abc,efg,xyz
Required o/p file:
"abc (Value + blank spaces=16) " ,"efg (Value +blank spaces=15) " ,"xyz (Value+ blank spaces =20) "
In short input file value stores in result file with " i/p Value " added with spaces and are of fixed size like 16,15,20
How to do using... (2 Replies)
Right now, my code is:
s/Secondary Ins./Secondary Ins.\
1/g
It's adding a 1 as soon as it finds Secondary Ins.
Primary Ins.: MEDICARE B DMERC Secondary Ins.
1: CONTINENTAL LIFE INS
What I really want to achieve is having a 1 added on the next line that contain "Secondary Ins." It... (4 Replies)
Hi,
I need to replace and append a string in a text if grep is true. For eg:
grep ABC test.txt | grep -v '\.$' | awk {'print $4'} | sed "s/ ?
How do I replace all instances of "print $4" using sed with another sring? Eg of the string returned will be,
lx123
web222
xyz
Want to... (8 Replies)
Hi All,
I'm trying to insert a string into a file at a specific location.
I'd like to add a string after the parent::__construct(); in my file.
<?php if (! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Controller extends CI_Controller {
function... (6 Replies)
My input file is:
LOC_Os01g01870 GO:0006139
LOC_Os01g01870 GO:0009058
LOC_Os01g02570 GO:0006464
LOC_Os01g02570 GO:0009987
LOC_Os01g02570 GO:0008152
LOC_Os01g04380 GO:0006950
LOC_Os01g04380 GO:0009628
I want to append the duplicate values in a tab/space... (2 Replies)
Hi Team,
Pls help to get the desired output.
I have a input like below
nodecount=10
host=na7-db1-1-chi
nodecount can be 10 or 8 based on this we need a output (in single line) like below
na7-db1-1-chi:A na7-db1-2-chi:B na7-db1-3-chi:C na7-db1-4-chi:D na7-db1-5-chi:E... (4 Replies)
Discussion started by: kamauv234
4 Replies
LEARN ABOUT X11R4
source
exec(1) User Commands exec(1)NAME
exec, eval, source - shell built-in functions to execute other commands
SYNOPSIS
sh
exec [argument...]
eval [argument...]
csh
exec command
eval argument...
source [-h] name
ksh
*exec [arg...]
*eval [arg...]
DESCRIPTION
sh
The exec command specified by the arguments is executed in place of this shell without creating a new process. Input/output arguments may
appear and, if no other arguments are given, cause the shell input/output to be modified.
The arguments to the eval built-in are read as input to the shell and the resulting command(s) executed.
csh
exec executes command in place of the current shell, which terminates.
eval reads its arguments as input to the shell and executes the resulting command(s). This is usually used to execute commands generated as
the result of command or variable substitution.
source reads commands from name. source commands may be nested, but if they are nested too deeply the shell may run out of file descrip-
tors. An error in a sourced file at any level terminates all nested source commands.
-h Place commands from the file name on the history list without executing them.
ksh
With the exec built-in, if arg is given, the command specified by the arguments is executed in place of this shell without creating a new
process. Input/output arguments may appear and affect the current process. If no arguments are given the effect of this command is to mod-
ify file descriptors as prescribed by the input/output redirection list. In this case, any file descriptor numbers greater than 2 that are
opened with this mechanism are closed when invoking another program.
The arguments to eval are read as input to the shell and the resulting command(s) executed.
On this man 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, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
EXIT STATUS
For ksh:
If command is not found, the exit status is 127. If command is found, but is not an executable utility, the exit status is 126. If a redi-
rection error occurs, the shell exits with a value in the range 1-125. Otherwise, exec returns a zero exit status.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), ksh(1), sh(1), attributes(5)SunOS 5.10 17 Jul 2002 exec(1)