It alters values inside the shell itself, so it pretty much has to be a builtin. So does cd. (There is sometimes a cd utility too, but it's used for other purposes.)
The standards require that "standard utilities" have to be available as stand-alone utilities so you do things like:
The only utilities defined by the standards that are excluded from this requirement are the special built-ins: break, colon, continue, dot (i.e., .), eval, exec, exit, export, readonly, return, set, shift, times, trap, and unset.
And, before you say it doesn't make any sense to use cd in a find -exec primary, the command:
is a simple way to get the names of inaccessible directories in the file hierarchy rooted in the directory named dir.
These 4 Users Gave Thanks to Don Cragun For This Post:
Hi,
Command "chfn" can be used to change finger information.. can anybody tell me how to unset i mean reset the same finger information.
Thanks in advance,
Chanakya (3 Replies)
Hi All,
May be this is a very simple question...
$ b=8
$ readonly b
$ echo $b
8
$ b=90
-bash: b: readonly variable
$ unset b
-bash: unset: b: cannot unset: readonly variable
I m not able to change the readonly mode of variable b
Please help me out..
Thanks
Nidhi (2 Replies)
Hi,
I am writing a BASH script. My questions regard deleting elements of arrays.
I have an array:
michael-browns-powerbook-g4-15:~ msb65$ test_array=(1 2 3 4)
michael-browns-powerbook-g4-15:~ msb65$ echo ${test_array}
1 2 3 4
To delete the second element of test_array I type:... (3 Replies)
As of Solaris 9,10 in /etc/system file I can comment the “set maxuprc” for the restriction.
But in Solaris zones how I can unset the variable “maxuprc” because /etc/system file is not there.
How I can proceed.
Regards,
Kalai (1 Reply)
can I use unset to unset all the variables in a shell sciprt?
VAR1=1
VAR2=2
VAR3=3
unset
whether this unset will afftect any system variables?
Thanks, (3 Replies)
Could someone please tell me how to unset your .bashrc? I have tried all of these. I can't find anything useful from google.
unset -f .bashrc
unset .bashrc (9 Replies)
I'm wondering, is the number of variables will affect execution time of my bash script or maybe affect the cpu workload, cpu memory, etc ?
If I create so many variables, should I unset each one of that variables after I used them or after I think they are no longer needed?
and if my script... (2 Replies)
I have a script with a $PASSWORD variable. I unset it right after using it, just to minimize the chance it could be left around for a snooper. That worked just fine... until I used a password with a value of "P@ssw0rd" Now, unset (even with -f, even with the variable enquoted) tells me: unset:... (1 Reply)
Hi all,
Does anyone know how to change PROC_MEM_RES?
We have a DB server with quite a few oracle instances (RAC) and we are getting critical alerts for PROC_MEM_RES.
Anyone know how to increase the current setting or what we should do about it?
Thanks in advance.
john (2 Replies)