I find someone use "wget -g 'a ip' -l /tmp/l -r /1 "。 I use the command of "man wget" in linux.But i don't find the parameter of g. who can tell me the use of g?
I believe this is an FTP parameter used to turn on file globbing.
Related
I am reviewing the source code for gitflow-avh (A VirtualHome edition), version 1.12.3, which ships with Git for Windows, version 2.31.1. I'm looking at lines 67-73 of the script git-flow.
*MINGW*)
export GITFLOW_DIR=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
pwd () {
builtin pwd -W
}
;;
*)
# The sed expression here replaces all backslashes by forward slashes.
# This helps our Windows users, while not bothering our Unix users.)
export GITFLOW_DIR=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
;;
esac
What is the -W option? I'm only aware of -L and -P in bash. I'm fairly confident this is a "MINGW-ism", but I'm having trouble finding documentation online.
Does anyone know what the -W option does?
Ok, so I found this specifically has to do with MSYS2, as opposed to MINGW.
Per MSYS2's website, "How does MSYS2 differ from Cygwin?":
I had to run MSYS2 itself to actually see what the -W option provided:
In my "root" directory in Git Bash on Windows, pwd just gives me /.
But with -W, I get the real location:
$ pwd -W
C:/Program Files/Git
There's nothing on the man page for pwd, of course. Based on #A. Hendry's answer, I think I'll just alias pwd so that it always uses the -W option.
I am trying to put below command in perl system() function.But getting so many compilation errors (syntax).
./istool export -domain serviceshost:9080 -u dsadm -p password -ar test.isx -pre -ds '-base="ENGINEHOST/Dev_Project" Jobs/Batch/\*.*'
I was using it like in perl:
system("./istool export -domain serviceshost:9080 -u dsadm -p password -ar test.isx -pre -ds '-base="ENGINEHOST/Dev_Project" Jobs/Batch/\*.*'");
can some one guide me exactly how to use it in system function?I tried escaping . also with backslash(\) in front of it.
Replace system with print, and it's obvious you didn't build the string correctly.
If you want to include a " in a string quoted with ", you need to escape it.
If you want to include a \ in a double-quoted string, you need to escape it.
I have a question illustrated by the following command line interaction:
$ wget www.google.com -nv >> out.log
2014-10-28 21:41:43 URL:http://www.google.com/ [17700] -> "index.html.1" [1]
So wget www.google.com, and using -nv (nonverbose, but still printing error information), and i redirected all the output to out.log, so nothing should print on stdout, but information still gets printed to the terminal, which i can only assume is coming from stderr. Does anyone know why wget does that? How would i go about turning it off and still preserve error logging when there are actual errors?
Thanks a lot!
Jason
Like the manual says, the option you are looking for is -q. "Non-verbose" merely turns off verbose status reporting.
The somewhat weird design decisions in wget are one reason to prefer curl.
Use cURL instead:
$ curl -Ss http://www.stackoverflow.com -o /dev/null
(no output)
$ curl -Ss http://www.stackoverflow.invalid -o /dev/null
curl: (6) Couldn't resolve host 'www.stackoverflow.invalid'
If you for whichever reason really need to use wget, you can capture output and only show it on failure:
errors=$(2>&1 wget -nv http://www.stackoverflow.com) || echo "$errors" >&2
I'm looking to use wget to retrieve a perl file and execute it in one line. Does anyone know if this is possible/how I would go about doing this?
In order to use wget for this purpose, you would use the -O flag and give it the '-' character as an argument. From the manpage:
-O file
--output-document=file
Giving '-' as the "file" option to -O tells it to send it's output to stdout, which can then be piped into the Perl command.
You can provide the -q flag as well to turn off wget's own warning and message output:
-q
--quiet
Turn off Wget's output.
This will make things look cleaner in the shell.
So you would end up with something like:
wget -qO - http://127.0.0.1/myscript.pl | perl -
For more information on I/O redirection take a look at this:
http://www.tldp.org/LDP/abs/html/io-redirection.html
Just download and pipe to perl
curl -L http://your_location.pl | perl -
You'll sometimes see code like for install modules like cpanm.
Can sh itself check if a program exists or is in path?
I.e., not with the help of the "which" program.
I don't believe sh can directly. But perhaps something like:
which() {
save_IFS=$IFS
IFS=:
for d in $PATH; do
test -x $d/$1 && echo $d/$1
done
IFS=$save_IFS
}
and here's a nice variation that uses a subshell so that restoring IFS is not necessary:
which() (
IFS=:
for d in $PATH; do
test -x $d/$1 && echo $d/$1
done
)
Also, (in bash) if the command has been executed in the past and bash has already done the PATH search, you can see what it found with hash -t.
bash-3.2$ hash -t which
bash: hash: which: not found
bash-3.2$ which foo
bash-3.2$ hash -t which
/usr/bin/which
The utility command -v $CMD is apparently a portable option (in the sense of being part of POSIX); see also the very similar (though bash-specific) question, in particular this answer.