In Linux Terminal is it a dash sign can be use as a temporary filename?
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I'm new to Linux and I was learning nmap, I have a question about the dash sign, I saw a line of command in a tutorial which are
nmap -oG - 1.2.3.4 -p 22 -vv > /home/TEST
My question is after -oG a filename are required for the option, but why it can be skip if using dash sign as the filename for the option? is it because of the dash sign is mean by temporary file or something else? Also it wont create a file named "-" in the /home/ directory.
linux terminal nmap
asked Nov 19 at 17:29
李晓东
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up vote
0
down vote
favorite
I'm new to Linux and I was learning nmap, I have a question about the dash sign, I saw a line of command in a tutorial which are
nmap -oG - 1.2.3.4 -p 22 -vv > /home/TEST
My question is after -oG a filename are required for the option, but why it can be skip if using dash sign as the filename for the option? is it because of the dash sign is mean by temporary file or something else? Also it wont create a file named "-" in the /home/ directory.
linux terminal nmap
asked Nov 19 at 17:29
李晓东
295
1
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I'm new to Linux and I was learning nmap, I have a question about the dash sign, I saw a line of command in a tutorial which are
nmap -oG - 1.2.3.4 -p 22 -vv > /home/TEST
My question is after -oG a filename are required for the option, but why it can be skip if using dash sign as the filename for the option? is it because of the dash sign is mean by temporary file or something else? Also it wont create a file named "-" in the /home/ directory.
linux terminal nmap
asked Nov 19 at 17:29
李晓东
295
I'm new to Linux and I was learning nmap, I have a question about the dash sign, I saw a line of command in a tutorial which are
nmap -oG - 1.2.3.4 -p 22 -vv > /home/TEST
My question is after -oG a filename are required for the option, but why it can be skip if using dash sign as the filename for the option? is it because of the dash sign is mean by temporary file or something else? Also it wont create a file named "-" in the /home/ directory.
linux terminal nmap
linux terminal nmap
asked Nov 19 at 17:29
李晓东
295
asked Nov 19 at 17:29
李晓东
295
asked Nov 19 at 17:29
李晓东
295
asked Nov 19 at 17:29
李晓东
295
asked Nov 19 at 17:29
李晓东
295
295
1
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59
add a comment |
1
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59
1
1
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59
add a comment |
1 Answer
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It means stdout, which would be /home/TEST in your example. You could also just use:
nmap -oG /home/TEST 1.2.3.4 -p 22 -vv
From man nmap (section "Output"):
... While these options save results to files, Nmap still prints interactive output to stdout as usual. For example, the command nmap -oX myscan.xml
target prints XML to myscan.xml and fills standard output with the same interactive results it would have printed if -oX wasn't specified at all.
You can change this by passing a hyphen character as the argument to one of the format types. This causes Nmap to deactivate interactive output, and
instead print results in the format you specified to the standard output stream. So the command nmap -oX - target will send only XML output to
stdout.. Serious errors may still be printed to the normal error stream, stderr. ...
answered Nov 19 at 17:35
hek2mgl
106k13139159
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
It means stdout, which would be /home/TEST in your example. You could also just use:
nmap -oG /home/TEST 1.2.3.4 -p 22 -vv
From man nmap (section "Output"):
... While these options save results to files, Nmap still prints interactive output to stdout as usual. For example, the command nmap -oX myscan.xml
target prints XML to myscan.xml and fills standard output with the same interactive results it would have printed if -oX wasn't specified at all.
You can change this by passing a hyphen character as the argument to one of the format types. This causes Nmap to deactivate interactive output, and
instead print results in the format you specified to the standard output stream. So the command nmap -oX - target will send only XML output to
stdout.. Serious errors may still be printed to the normal error stream, stderr. ...
answered Nov 19 at 17:35
hek2mgl
106k13139159
add a comment |
up vote
0
down vote
accepted
It means stdout, which would be /home/TEST in your example. You could also just use:
nmap -oG /home/TEST 1.2.3.4 -p 22 -vv
From man nmap (section "Output"):
... While these options save results to files, Nmap still prints interactive output to stdout as usual. For example, the command nmap -oX myscan.xml
target prints XML to myscan.xml and fills standard output with the same interactive results it would have printed if -oX wasn't specified at all.
You can change this by passing a hyphen character as the argument to one of the format types. This causes Nmap to deactivate interactive output, and
instead print results in the format you specified to the standard output stream. So the command nmap -oX - target will send only XML output to
stdout.. Serious errors may still be printed to the normal error stream, stderr. ...
answered Nov 19 at 17:35
hek2mgl
106k13139159
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
It means stdout, which would be /home/TEST in your example. You could also just use:
nmap -oG /home/TEST 1.2.3.4 -p 22 -vv
From man nmap (section "Output"):
... While these options save results to files, Nmap still prints interactive output to stdout as usual. For example, the command nmap -oX myscan.xml
target prints XML to myscan.xml and fills standard output with the same interactive results it would have printed if -oX wasn't specified at all.
You can change this by passing a hyphen character as the argument to one of the format types. This causes Nmap to deactivate interactive output, and
instead print results in the format you specified to the standard output stream. So the command nmap -oX - target will send only XML output to
stdout.. Serious errors may still be printed to the normal error stream, stderr. ...
answered Nov 19 at 17:35
hek2mgl
106k13139159
It means stdout, which would be /home/TEST in your example. You could also just use:
nmap -oG /home/TEST 1.2.3.4 -p 22 -vv
From man nmap (section "Output"):
... While these options save results to files, Nmap still prints interactive output to stdout as usual. For example, the command nmap -oX myscan.xml
target prints XML to myscan.xml and fills standard output with the same interactive results it would have printed if -oX wasn't specified at all.
You can change this by passing a hyphen character as the argument to one of the format types. This causes Nmap to deactivate interactive output, and
instead print results in the format you specified to the standard output stream. So the command nmap -oX - target will send only XML output to
stdout.. Serious errors may still be printed to the normal error stream, stderr. ...
answered Nov 19 at 17:35
hek2mgl
106k13139159
edited Nov 19 at 17:48
answered Nov 19 at 17:35
hek2mgl
106k13139159
answered Nov 19 at 17:35
hek2mgl
106k13139159
answered Nov 19 at 17:35
hek2mgl
106k13139159
106k13139159
add a comment |
add a comment |
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1
I'm voting to close this question as off-topic because it's not a programming question and would be better served @ unix.stackexchange.com/questions/tagged/linux
– tink
Nov 19 at 17:59