so i have scripts that get run in ways similar to this:
my question is, how can i verify that that the "perl" or "ruby" or "python" tool being run on the box is actually a legit tool? meaning, someone may move the tool from where it is originally supposed to be i.e. /usr/bin and may move it somewhere else. and then put a counterfeit version back in its place in /usr/bin.
is there any testing i can do on the tools themselves that will confirm yes, this tool is valid and is not something unusual?
my first thought was to use the file command...like this:
but im afraid there may be ways to fool this or tinker around with this to give inaccurate information masquerading as true.
I see you guys encouraged people studied and used C while they were working on UNIX. Does C++ or JAVA matter? And in the past threads, Neo, PxT, and other members recommanded lots good books. I think those people who asked for the references, such as Dominic, had experiences on sys admin or... (8 Replies)
I am searching for a good debugger and memory leak detection tools like for AIX.
Right now we use Xldb for debugging, which is not bad, but detecting memory leaks is a pain...
Unfortunately Purify is not aviable for the AIX plattform.
DDD is not bad as an alternative debugger but he is... (0 Replies)
Can someone enligten me on what below program does?
I understand getchar and putchar.. but what is this program suppose to do?
I try to put printf on it, but it shows nothing..
can someone explain to me what this program is suppose to do?
It is reading something and assigning to c?
so, if... (8 Replies)
Hello,
I am trying to learn Networking Programming in C in unix enviorment. I want to know how good it is to become a network programmer. i am crazy about Network programming but i also want to opt for the best carreer options. Anybody experienced Network Programmer, please tell me is my... (5 Replies)
Hello there, i've lurked this forum for a while (in few month i will have been registered for two years) but this is my firts post.
Well, after having looked to C language as a black monster, i finally have decided to learn it, and to learn it very well!
So, i'm quite new to C, although i... (1 Reply)
I need a small and simple clarification...
Can someone tell me whether PERL is a programming language or not.
Also, can shell scripts also considered as programming language or not.
Also, please tell me the exact difference between programming language and scripting.
Please help.... (3 Replies)
I'm wondering how programmers develop new Web Development languages because I want to learn how everything begins from the start. Let's say I'm planning to write a new language for the Web. How do I do this? Is there anyone who knows about the way Web Development languages first appear ? I'm asking... (1 Reply)
I want to create a computer program that will translate from English to Spanish and vice versa. So someone could type in a word, phrase, or paragraph and translate from one language to another. What programming language would I use to write up the code and then implement this program?
I want to... (8 Replies)
I'm wondering how programmers develop new Web Development languages because I want to learn how everything begins from the start. Let's say I'm planning to write a new language for the Web. How do I do this? Is there anyone who knows about the way Web Development languages first appear ? I'm... (3 Replies)
Discussion started by: Anna Hussie
3 Replies
LEARN ABOUT OPENSOLARIS
gzexe
GZEXE(1) General Commands Manual GZEXE(1)NAME
gzexe - compress executable files in place
SYNOPSIS
gzexe [ name ... ]
DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a
penalty in performance). For example if you execute ``gzexe /bin/cat'' it will create the following two files:
-r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat
-r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~
/bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that
/bin/cat works properly.
This utility is most useful on systems with very small disks.
OPTIONS -d Decompress the given executables instead of compressing them.
SEE ALSO gzip(1), gznew(1), gzmore(1), gzcmp(1), gzforce(1)CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the
PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep).
BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases,
using chmod or chown.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWgzip |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+
NOTES
Source for gzip is available on http://opensolaris.org.
GZEXE(1)