No, because you cannot assign a value to a positional parameter this way. What you can do is
but only if you can accept to loose the current value of $1 and all other positional parameters ($2, $3, ...), if present.
how can i use a rlogin with out entered a password,
someone tell me about configure the next files
/.rhosts
/etc/hosts.equiv and /etc/hosts
but i not sure about that, or there are not enough
could you tell me how to do that? (3 Replies)
anyone can help me how to implement the timer on AIX?
I tried with 'setitimer' and its related functions, but it does not work correctly,the program exited each time.
thanks (2 Replies)
Hi,
Can you please help me in implementing a timer based polling for function in C? ie. the function should be called in say 30secs(when 30secs has lapsed).
Thanks (7 Replies)
Hi all,
could any of you please help me on my problem..
we are doing FTP (one report out put) from one server to another server through unix shell script program.
Due to the network issues, some times FTP process is hanging.
So we planned to modify the existing program with the following... (2 Replies)
Dear All,
i want to implement vookup function which is there in excel into Unix. Suppose i have 2 files. The files are given below.
File1:
MSC Cell SDCA
Patna-1 12 Bihar
Patna-2 45 Ranchi
Bhopal-1 85 Raigarh
Bhopal-2 ... (8 Replies)
hi,
i am having three files which is having following data
file1:
field1 field2 field3
1 A B
2 C D
3 E F
file2:
4 G H
1 I J
5 K L
file3:
4 M N (3 Replies)
Hello, could anybody explain how the ps command works? I know something about the proc file system. But I'm still not sure about how it exactly works. Like ps without any option will print out the current user's processes, but it never displays my web browsers such as firefox or my LibreOffice... (3 Replies)
Hello, I'm currently implementing the && function in a shell using C. For example, if we input cmd1 && cmd2, then cmd2 executes only when cmd1 exits successfully. I'm thinking about:
int main() {
int i;
char **args;
while(1) {
printf("yongfeng's shell:~$ ");
args =... (5 Replies)
Discussion started by: Yongfeng
5 Replies
LEARN ABOUT PHP
shift
shift(1) User Commands shift(1)NAME
shift - shell built-in function to traverse either a shell's argument list or a list of field-separated words
SYNOPSIS
sh
shift [n]
csh
shift [variable]
ksh
* shift [n]
DESCRIPTION
sh
The positional parameters from $n+1 ... are renamed $1 ... . If n is not given, it is assumed to be 1.
csh
The components of argv, or variable, if supplied, are shifted to the left, discarding the first component. It is an error for the variable
not to be set or to have a null value.
ksh
The positional parameters from $n+1 $n+1 ... are renamed $1 ..., default n is 1. The parameter n can be any arithmetic expression that
evaluates to a non-negative number less than or equal to $#.
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.
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 15 Apr 1994 shift(1)