Commands tagged xpath (5)

  • I look at xkcd in my news reader, but it displays the image's title attribute only for a few seconds which makes reading the longer ones more challenging. So I use this to display it in my console.


    1
    curl -s 'http://xkcd.com/rss.xml' | xpath '//item[1]/description/text()' 2>&1 | sed -n 's/.*title="\([^"]*\)".*/\1/p' | fold -s
    putnamhill · 2013-02-16 22:38:26 8
  • Ever wanted to stream your favorite podcast across the network, well now you can. This command will parse the iTunes enabled podcast and stream the latest episode across the network through ssh encryption. Show Sample Output


    0
    curl -L -s `curl -s http://www.2600.com/oth-broadband.xml` | xmlstarlet sel -t -m "//enclosure[1]" -v "@url" -n | head -n 1` | ssh -t [user]@[host] "mpg123 -"
    denzuko · 2010-07-30 23:20:50 4
  • Gets the latest podcast show from from your favorite Podcast. Uses curl and xmlstarlet. Make sure you change out the items between brackets.


    0
    curl -L -s `curl -s [http://podcast.com/show.rss]` | xmlstarlet sel -t -m "//enclosure[1]" -v "@url" -n | head -n 1` | ssh -t [user]@[host] "mpg123 -"
    denzuko · 2010-07-31 00:17:47 4
  • This function uses xmllint to evaluate xpaths. Usage: xpath /some/xpath XMLfile Show Sample Output


    0
    xpath () { xmllint --format --shell "$2" <<< "cat $1" | sed '/^\/ >/d' }
    sharfah · 2011-10-05 07:45:16 15
  • This function uses xmllint to evaluate xpaths. Usage: xpath /path/to/element XMLfile


    -1
    xpath () { xmllint --format --shell "$2" <<< "cat $1" | sed '/^\/ >/d' }
    sharfah · 2011-12-20 08:34:11 4

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Using numsum to sum a column of numbers.
numsum is part of of the num-utils package, which is available in some Linux distros and can also be downloaded at http://suso.suso.org/xulu/Num-utils. It contains about 10 different programs for dealing with numbers from the command line. Obviously you can do a lot of things that the num-utils programs do in awk, sed, bash, perl scripts, but num-utils are there so that you don't have to remember the syntax for more complex operations and can just think: compute the sum, average, boundary numbers, etc.

Tells the shell you are using

List all groups and the user names that were in each group
"cut" the user names from /etc/passwd and then running a loop over them.

A command to copy mysql tables from a remote host to current host via ssh.
In the example above 3 tables are copied. You can change the number of tables. You should be able to come up with variants of the command by modifying the mysqldump part easily, to copy some part of remote mysql DB.

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Find which service was used by which port number

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Have a smile
Outputs utf-8 smileys

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"


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