name
A word consisting solely of letters, numbers, and underscores, and beginning with a letter or underscore. Names are used as shell variable and function names. Also referred to as an identifier.
There is a way that the look of your requirement can be done -- essentially as an indirect assignment:
Producing:
However, in general, $ is used as the dereferencing operator in shells. In elementary perl, it must be used to identify scalar variables ... cheers, drl
Hi,
I have got an application through which an user will submit an address like "c:\tuser\abc".
This application calls a script and passes the address to the scripts positional parameter say $1.
So $1 should contain "c:\tuser\abc", but when $1 is echoed the "\t" and "\a" are interpreted to... (4 Replies)
Hi,
Is it possible to view the escape sequence in the ascii file. That is I want to see the newlinw character,tab ........ etc
Thanks
Sweta (4 Replies)
I couldn't seem to make 'HOME' key work on my remote windows ssh client to a Fedora Core3 server (the home key works perfectly when i'm physically on site.)
To my surprise, using control+V it seems that both my home and insert key send the same escape sequence ^So it must be my windows SSH client... (0 Replies)
Hi All,
I have added the script command to user profile so that to record the on-screen data.But when i i checked the O/P i could see lot of escape sequence is there way to remove it. (2 Replies)
$table is the variable which contains name of the file.
Filename may have the special character $. Need to escape $ .
Tried below options to escape dollar:
\$$table
"\$"$table""
what is the escape sequence for egrep function..?
Below is the code snippet-
my $table;
foreach... (3 Replies)
I ran the following grep and sed command.
grep "\t" emp.txt
sed -n '/\t/p' emp.txt
grep treated the '\' as to escape t and took the pattern as literal t whereas sed took the pattern as tab.
That means , grep doesn't understand escape sequence!!!!!!
what to do to make grep... (8 Replies)
Friends,
In the file i am having more then 100 lines like,
File1 had the values like this:
#Example East.server_01=EAST.SERVER_01
East.server_01=EAST.SERVER_01
West.server_01=WEST.SERVER_01
File2 had the values like this:
#Example EAST.SERVER_01=http://yahoo.com... (3 Replies)
Hello,
I am running Solaris 8. When issuing the command "stty lcase" all text which is output to the terminal are capitalized. Letters that are supposed to be capitals are preceded by a backslash during output. All text which is input is converted to lower case. This is the expected behaviour... (5 Replies)
Hi
I am try to use sed to remove decleration information from an XML file however their are special characters in the string and sed is not able to parse it . I am using the following commond.
sed -e "s/xmlns=http://www.abc.com/integration/services/testtemplate1//g" Orginal.xml... (3 Replies)
Having a doubt on how Function keys are mapped.
1. In my HPUX box my infocmp shows that kf1 (F1 key mapping) is not mapped. But somehow I am able to use an Informix form which requires navigation using F1 keys.
vt100-w|vt100-w-am|dec vt100 132 cols (w/advanced video),
bce, bw, ccc,... (3 Replies)
Discussion started by: clemansy
3 Replies
LEARN ABOUT HPUX
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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)