ok guys and gals at the moment i am perplexed (prolly cuz i been looking at it to long) but here it is.
OS: sol8
perlver: 5.8.0
shell: ksh
answer must be in perl!!
issue:
when i use pack() it packs the data at the front of the requested field space. normally it wouldnt be a problem if... (1 Reply)
Hello everyone.
I wrote a perl script to get the two answers from a value: x.
By this, I want to do sqrt($x) in different precision.
#!/usr/bin/perl
print "Input the initial value x:\n";
chomp($x=<STDIN>);
$comp=sqrt($x);
$float_value=pack("f", $comp);
$double_value=pack("d", $comp);... (2 Replies)
Hi! I'm doing bash shell scripting and would like to know if bash had something similar to perl's split function? Ultimately, I want to split two strings (delimeter = '.') and compare each of their values. Thus, I figured putting them in an array would be easiest.
So i.e.:
String 1:... (5 Replies)
I have a file that contains user id and corresponding password.
Lets say password is "help". The below command will create a hex value for string "help".
perl -e 'print unpack "H*","help"'
So now password is in encoded format.
Then I decoded it in the script where am fetching the... (1 Reply)
Is it possible to invoke a perl function from a bash script ?
There are existing perl scripts with many functions that I want to reuse from a more recent script written in bash. Hence the question. (1 Reply)
In Perl I can write a condition that evaluates a match expression like this:
if ($foo =~ /^bar/) {
do blah blah blah
}
How do I write this in shell? What I need to know is what operator do I use? The '=~' doesn't seem to fit. I've tried different operators, I browsed the man page for... (3 Replies)
Hi I have a code like this:
sub WriteEbcdicHeader
{
my $Htimestamp=localtime();#i need to pack and unpack this
my $eheaderline = $Htimestamp;
#packing has to be done here
#unpacking has to be done after packing
print $EOUTFILE
return $eheaderline;
}
sub WriteEbcdicTrailer
{
... (5 Replies)
Hello All,
Alright, so this is driving me absolutely insane. I can't seem to find this ANYWHERE...
I've tried every combination and synonym I can think of for this trying to search Google.
What is the Expect/Tcl equivalent to Perl and Bash's "=~" operator, (i.e. the "contains" operator).... (2 Replies)
Discussion started by: mrm5102
2 Replies
LEARN ABOUT DEBIAN
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)