how can i check that a variable is between 0-100, like if i ask a user to input a number between 1-100 and i want to excute commands WHILE that number is between that range or else i will keep asking the user to make another input
here's what i got
#!/bin/bash
echo "Guess my secret number... (2 Replies)
I'm using the following in my script.
if echo $cpuidle |/usr/bin/egrep ; then
when I issue this statement it issues the value of the variable back to stdout which ends up in my output file.
Is there a better way to write this?
I'm using ksh on solaris 9. (3 Replies)
How could I check if a numeric variable has 5 digits in KSH...I have a zipcode variable that I know will always be 5 digits, and I want to print out an error if it is less or more than 5 digits the problem is that I have it as:
if ]
but this won't work because the statement doesn't see 0001 as... (3 Replies)
Does anyone know the quick way to check if the variable contains only numeric characters, for example:
A=123445 - correct
B=#f123* - incorrect
I am in ksh88i Thanks a lot for help -A (1 Reply)
hi all,
i have a shell (ksh) script where i am reading line by line from a grep command and i wanted to check if the grep command actually returned something or was null. i can do this by using -z :
if ; then .....
but this forces me to do something when $myVariable is null when i... (3 Replies)
Hi
I am very new to shell scripting and have written a script (below).
However the directory I am searching will contain a file with a .trn extension each day which I want to eliminate.
Each day the file extension overnight will change to trx, if this fails I want to know.
Basically what I... (2 Replies)
Hi Experts,
I have a file as given below and want to filter out the filenames in it , by deleting left and right filds and to have the fllenames (There are spaces in the filename),
Sun Jan 11 11:20:10 2009 1 0 /home/output/file2311_recent.list user1 user2 0 done
Sun Jan 11 11:20:10 2009 1 0... (10 Replies)
This is what I have just entered and received in return:
# echo $LANG
LANG: Undefined variable.
How can this be? I was expecting something like en_US.utf8. Am using FreeBSD 8.2. (2 Replies)
Hi guys, I'm try making to script for eliminate files rlogins.
path1='/home/*'
for i in `cat /etc/passwd |awk -F: '{print $6}'`; do
if test "$i" = "$path1"; then
echo $i
cd $i
if ; then
echo "$i/.rhosts detectado"|mail -s "rhosts" root
... (14 Replies)
Hi,
I have a file abc.txt as
ABC,TYU,1.2566
AHG,GJJ,1.898
hgh,FGA,1.854
My program is reading each line and storing the values variables base_cy, quo_cy, ra_amt
Need to validate each of them as in:
base_cy and quo_cy should be a 3 character alphabet among A-Z, if it is lower case ... (1 Reply)
Discussion started by: infyanurag
1 Replies
LEARN ABOUT CENTOS
libtalloc_stealing
libtalloc_stealing(3) talloc libtalloc_stealing(3)NAME
libtalloc_stealing - Chapter 2: Stealing a context
Stealing a context
Talloc has the ability to change the parent of a talloc context to another one. This operation is commonly referred to as stealing and it
is one of the most important actions performed with talloc contexts.
Stealing a context is necessary if we want the pointer to outlive the context it is created on. This has many possible use cases, for
instance stealing a result of a database search to an in-memory cache context, changing the parent of a field of a generic structure to a
more specific one or vice-versa. The most common scenario, at least in Samba, is to steal output data from a function-specific context to
the output context given as an argument of that function.
struct foo {
char *a1;
char *a2;
char *a3;
};
struct bar {
char *wurst;
struct foo *foo;
};
struct foo *foo = talloc_zero(ctx, struct foo);
foo->a1 = talloc_strdup(foo, "a1");
foo->a2 = talloc_strdup(foo, "a2");
foo->a3 = talloc_strdup(foo, "a3");
struct bar *bar = talloc_zero(NULL, struct bar);
/* change parent of foo from ctx to bar */
bar->foo = talloc_steal(bar, foo);
/* or do the same but assign foo = NULL */
bar->foo = talloc_move(bar, &foo);
The talloc_move() function is similar to the talloc_steal() function but additionally sets the source pointer to NULL.
In general, the source pointer itself is not changed (it only replaces the parent in the meta data). But the common usage is that the
result is assigned to another variable, thus further accessing the pointer from the original variable should be avoided unless it is
necessary. In this case talloc_move() is the preferred way of stealing a context. Additionally sets the source pointer to NULL,
thus.protects the pointer from being accidentally freed and accessed using the old variable after its parent has been changed.
Version 2.0 Tue Jun 17 2014 libtalloc_stealing(3)