Im trying to write a bash script that has an if statment that when the user enters ONLY that exact argument, will echo what follows that conditon.
For example:
Basically, if i specify anything other then 1 as this cmd files argument, it wont output anything.
But if i do specify 1 it will output the value that Var1 is holding... Another problem tha t i was having is that it will output when any 1 argument is passed. For example if 2 arguments are passed it wont output anything. If no arguments are passed it wont output anything. But it really doesnt matter what 1 argument i specify, it will output as long as 1 argument is givin.
What im trying to figure out from that point is how to write an if statement that looks for an exact match of that 1 argument that the user would specify.
Can someone please help me with this SHELL script?
I need to create a script that gets a positive number n as an argument. The script must calculate the factorial of its argument. In other words, it must calculate n!=1x2x3x...xn. Note that 0!=1.
Here is a start but I have no clue how to... (3 Replies)
I opened strict.pm and found some not understandable stuff, please let me know if you have any Idea on the same.
1) Line 23 => $bits |= (what is $= here how it affect the statement)
2) Line 36 => $^H (what is that I haven't found any statement on this in google)
3) Line 41 =>... (3 Replies)
If ($argv == “-debug”) then
Echo “in loop”
Endif
But this is not working. If I modify this code and remove “-“, then it works.
Similarly I am getting problem using grep command also
Grep “-debug” Filename
Can someone please help me on how to resolve these... (1 Reply)
Hi All,
I am running the script
VBoxManage list vms |sed 's/"//g' | cut -d " " -f1 > har1out.mytxt
result=`cat har1out.mytxt | grep $1'
echo $result
echo $1
{
if
then
echo pass
else
echo fail
fi (2 Replies)
I installed gcc4 today using setup.exe from cygwin. However, I cannot run any of my perl program after that. For example,
Run@Run-THINK /home
$ perl Process.pl
Can't locate strict.pm in @INC (@INC contains: /usr/lib/perl5/5.10/i686-cygwin /
usr/lib/perl5/5.10... (0 Replies)
What are the different ways to disable ssh strict checking? I've seen this mentioned a few times but it doesn't seem to be working.
$ ssh -o 'StrictHostKeyChecking no' admin@hostnamehttp://docs.oracle.com/cd/E35328_01/E35336/html/vmcli-ssh.html
Is there a file somewhere in /etc that I could... (4 Replies)
How do I get past the error when using strict and GetOpts ?
#!/usr/bin/perl
use strict;
use Getopt::Std;
# Process the command line options
die "Usage: $0 -r <router> -u <username> -p <password> -e <enable password>\n" if (@ARGV < 6);
exit if (!getopts('r:u:p:e:'));
my... (3 Replies)
Discussion started by: popeye
3 Replies
LEARN ABOUT POSIX
systemd-cat
SYSTEMD-CAT(1) systemd-cat SYSTEMD-CAT(1)NAME
systemd-cat - Connect a pipeline or program's output with the journal
SYNOPSIS
systemd-cat [OPTIONS...] [COMMAND] [ARGUMENTS...]
systemd-cat [OPTIONS...]
DESCRIPTION
systemd-cat may be used to connect the standard input and output of a process to the journal, or as a filter tool in a shell pipeline to
pass the output the previous pipeline element generates to the journal.
If no parameter is passed, systemd-cat will write everything it reads from standard input (stdin) to the journal.
If parameters are passed, they are executed as command line with standard output (stdout) and standard error output (stderr) connected to
the journal, so that all it writes is stored in the journal.
OPTIONS
The following options are understood:
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
-t, --identifier=
Specify a short string that is used to identify the logging tool. If not specified, no identification string is written to the journal.
-p, --priority=
Specify the default priority level for the logged messages. Pass one of "emerg", "alert", "crit", "err", "warning", "notice", "info",
"debug", or a value between 0 and 7 (corresponding to the same named levels). These priority values are the same as defined by
syslog(3). Defaults to "info". Note that this simply controls the default, individual lines may be logged with different levels if they
are prefixed accordingly. For details, see --level-prefix= below.
--level-prefix=
Controls whether lines read are parsed for syslog priority level prefixes. If enabled (the default), a line prefixed with a priority
prefix such as "<5>" is logged at priority 5 ("notice"), and similar for the other priority levels. Takes a boolean argument.
EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise.
EXAMPLES
Example 1. Invoke a program
This calls /bin/ls with standard output and error connected to the journal:
# systemd-cat ls
Example 2. Usage in a shell pipeline
This builds a shell pipeline also invoking /bin/ls and writes the output it generates to the journal:
# ls | systemd-cat
Even though the two examples have very similar effects the first is preferable since only one process is running at a time, and both stdout
and stderr are captured while in the second example, only stdout is captured.
SEE ALSO systemd(1), systemctl(1), logger(1)systemd 237SYSTEMD-CAT(1)