There are three options, that you can use. `-I` is to exclude binary files in grep. Other are for line numbers and file names.

    grep -I -n -H 


    -I -- process a binary file as if it did not contain matching data; 
    -n -- prefix each line of output with the 1-based line number within its input file
    -H -- print the file name for each match


So this might be a way to run grep:

    grep -InH your-word *

This is an old question and its been answered but I thought I&#39;d put the --binary-files=text option here for anyone who wants to use it. The -I option ignores the binary file but if you want the grep to treat the binary file as a text file use --binary-files=text like so:

    bash$ grep -i reset mediaLog*
    Binary file mediaLog_dc1.txt matches
    bash$ grep --binary-files=text -i reset mediaLog*
    mediaLog_dc1.txt:2016-06-29 15:46:02,470 - Media [uploadChunk  ,315] - ERROR - (&#39;Connection aborted.&#39;, error(104, &#39;Connection reset by peer&#39;))
    mediaLog_dc1.txt:ConnectionError: (&#39;Connection aborted.&#39;, error(104, &#39;Connection reset by peer&#39;))
    bash$

I have a docker image which installs `grunt`, but when I try to run it, I get an error:  

    Error response from daemon: Cannot start container foo_1: \
        exec: &quot;grunt serve&quot;: executable file not found in $PATH

If I run bash in interactive mode, `grunt` is available.

What am I doing wrong?

Here is my Dockerfile:

    # https://registry.hub.docker.com/u/dockerfile/nodejs/ (builds on ubuntu:14.04)
    FROM dockerfile/nodejs
    
    MAINTAINER My Name, me@email.com
    
    ENV HOME /home/web
    WORKDIR /home/web/site
    
    RUN useradd web -d /home/web -s /bin/bash -m
    
    RUN npm install -g grunt-cli
    RUN npm install -g bower
    
    RUN chown -R web:web /home/web
    USER web
    
    RUN git clone https://github.com/repo/site /home/web/site
    
    RUN npm install
    RUN bower install --config.interactive=false --allow-root
    
    ENV NODE_ENV development
    
    # Port 9000 for server
    # Port 35729 for livereload
    EXPOSE 9000 35729
    CMD [&quot;grunt&quot;]



docker: executable file not found in $PATH

In a 3-row layout:

* the top row should be sized according to its contents
* the bottom row should have a fixed height in pixels
* the middle row should expand to fill the container

The problem is that as the main content expands, it squishes the header and footer rows:

![Flexing Bad][1]

&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-css --&gt;

    section {
      display: flex;
      flex-flow: column;
      align-items: stretch;
      height: 300px;
    }
    header {
      flex: 0 1 auto;
      background: tomato;
    }
    div {
      flex: 1 1 auto;
      background: gold;
      overflow: auto;
    }
    footer {
      flex: 0 1 60px;
      background: lightgreen;
      /* fixes the footer: min-height: 60px; */
    }

&lt;!-- language: lang-html --&gt;

    &lt;section&gt;
      &lt;header&gt;
        header: sized to content
        &lt;br&gt;(but is it really?)
      &lt;/header&gt;
      &lt;div&gt;
        main content: fills remaining space&lt;br&gt;
        x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;
        &lt;!-- uncomment to see it break - -&gt;
        x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;
        x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;
        x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;
        x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;x&lt;br&gt;
        &lt;!-- --&gt;
      &lt;/div&gt;
      &lt;footer&gt;
        footer: fixed height in px
      &lt;/footer&gt;
    &lt;/section&gt;

&lt;!-- end snippet --&gt;


**Fiddle:**

* http://jsfiddle.net/7yLFL/1/   (working, with small content)
* http://jsfiddle.net/7yLFL/   (broken, with larger content)

I&#39;m in the lucky situation that I can use the latest and greatest in CSS, disregarding legacy browsers. I thought I could use the flex layout to finally get rid of the old table-based layouts. For some reason, it&#39;s not doing what I want...

For the record, there are many related questions on SO about &quot;filling the remaining height&quot;, but nothing that solves the problem I&#39;m having with flex. Refs:

* https://stackoverflow.com/questions/90178
* https://stackoverflow.com/questions/23389098
* https://stackoverflow.com/questions/18538536
* https://stackoverflow.com/questions/21222663
* https://stackoverflow.com/questions/23090136
* etc


  [1]: http://i.stack.imgur.com/Xwer8.png

Fill remaining vertical space with CSS using display:flex

When using `grep` in linux, the result often contains a lot of &quot;binary file XXX matches&quot;, which I do not care about. How to suppress this part of the results, or how to exclude binary files in grep?

How to suppress binary file matching results in grep

<p>When using <code>grep</code> in linux, the result often contains a lot of "binary file XXX matches", which I do not care about. How to suppress this part of the results, or how to exclude binary files in grep?</p>


This is really just to satisfy curiosity, and see if there&#39;s a better way to do this.

On my Windows 8 box, Node&#39;s `process.env` object has a `NUMBER_OF_PROCESSORS` property, on my Linux box it doesn&#39;t.

Obviously different platforms have different environment variables, that much is a given, but it seems like NUMBER_OF_PROCESSORS would be a useful thing to have regardless.

My quick fix for Linux was spawning a child process to run the `nproc` command, but I&#39;d like to avoid using a callback for simply getting the number of processors. Seems like there must be a simpler way.

What have other people done to solve this?

Node.js - Get number of processors available

I try to kill a process by pid file:

    kill -9 $(cat /var/run/myProcess.pid)

The pid file contains the process number. However executing the kill gives me no stdout and the processes is still alive. But this works:

    kill -9 PID

What is wrong with the first kill command? Does it fail to extract the PID from the file?

Example content of pid file:

    5424

and 

    kill -9 5424

works.

Kill process by pid file

I had to run `jmap` in order to take heap dump of my process. but `jvm` returned:

    Unable to open socket file: target process not responding or HotSpot VM not loaded
    The -F option can be used when the target process is not responding

So I used the `-F`:

    ./jmap -F -dump:format=b,file=heap.bin 10330
    Attaching to process ID 10331, please wait...
    Debugger attached successfully.
    Server compiler detected.
    JVM version is 24.51-b03
    Dumping heap to heap.bin ...

1. Using `-F`  is allright  for taking heap dump?
2. I am waiting 20 minutes and not finished yet. Any ideas why?

Running jmap getting Unable to open socket file


I am supposed to set the EC2_HOME and JAVA_HOME variables
before running a command (ec2-describe-regions)

How do I do that in one go?


How set multiple env variables for a bash command

I just installed python 2.7 and also pip to the 2.7 site package.

When I get the version with:

    pip -V

It shows:

    pip 1.3.1 from /usr/lib/python2.6/site-packages (python 2.6)

How do I use the 2.7 version of pip located at: 

    /usr/local/lib/python2.7/site-packages

how to use python2.7 pip instead of default pip

I need to check if the recipient username is in file */etc/passwd* which contains all the users in my class, but I have tried a few different combinations of *if* statements and *[grep][1]* without success. The best I could come up with is below, but I don&#39;t think it&#39;s working properly.

My logic behind it is that if the *grep* is null, the user is invalid.

    send_email()
    {
      message=
      address=
      attachment=
      validuser=1
      until [ &quot;$validuser&quot; = &quot;0&quot; ]
        do
        echo &quot;Enter the email address: &quot;
        read address
        if [ -z grep $address /etc/passwd ]
          then
        validuser=0
        else
            validuser=1
        fi
        echo -n &quot;Enter the subject of the message: &quot;
        read message
        echo &quot;&quot;
        echo &quot;Enter the file you want to attach: &quot;
        read attachment
        mail -s &quot;$message&quot; &quot;$address&quot;&lt;&quot;$attachment&quot;
        done
        press_enter
    }

  [1]: https://en.wikipedia.org/wiki/Grep




How can I check if &#39;grep&#39; doesn&#39;t have any output?

Given the following shell script, would someone be so kind as to explain the `grep -Po` regex please?

    #!/bin/bash
    # Issue the request for a bearer token, json is returned
    raw_json=`curl -s -X POST -d &quot;username=name&amp;password=secret&amp;client_id=security-admin-console&quot; http://localhost:8081/auth/realms/master/tokens/grants/access`
    # Strip away all but the &quot;access_token&quot; field&#39;s value using a Python regular expression
    bearerToken=`echo $raw_json | grep -Po &#39;&quot;&#39;&quot;access_token&quot;&#39;&quot;\s*:\s*&quot;\K([^&quot;]*)&#39;`
    echo &quot;The bearer token is:&quot;
    echo $bearerToken

So specifically, I&#39;m interested in understanding the parts of the regex

    grep -Po &#39;&quot;&#39;&quot;access_token&quot;&#39;&quot;\s*:\s*&quot;\K([^&quot;]*)&#39;`

and how it works. Why so many quotes? What is the &quot;K&quot; for? I&#39;ve some experience with grep regex but this confuses me.

This is the actual output of the curl command and the shell script (grep) works as desired returning just the contents of the &quot;access_token&quot; value.

&gt; {&quot;access_token&quot;:&quot;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.fQmQKn-xatvflHPAaxCfrrVow3ynpw0sREho7__jZo2d0g1SwZV7Lf4C26CcweNLlb3wmKHHo63HRz35qRxJ7BXyiZwHgXokvDJj13yuOb6Sirg9z02n6fwGy8Iog30pUvffnDaVnUWHfVL-h_R4-OZNf-_YUK5RcL2DHt0zUXI&quot;,&quot;expires_in&quot;:60,&quot;refresh_expires_in&quot;:1800,&quot;refresh_token&quot;:&quot;eyJhbGciOiJSUzI1NiJ9.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.WeiJOC1jQ52aKgnW8UN2Lv9rJ_yKZiOhijOYKLN2EEOkYF8rvRZsSKbTPFKTIUvjnwy2A7V_N-GhhJH4C-T7F5__QPNofSXbCNyvATj52jGLxk9V0Afvk-Z5QAWi55PJRTC0qteeMRcO2Frw-0KtKYe9o3UcGICJubxhZHsXBLA&quot;,&quot;token_type&quot;:&quot;bearer&quot;,&quot;id_token&quot;:&quot;eyJhbGciOiJSUzI1NiJ9.eyJuYW1lIjoiIiwianRpIjoiMGIyMGI0ODctOTI4OS00YTFhLTgyNmMtM2NiOTg0MDJkMzVkIiwiZXhwIjoxNDQ2ODI4MDU5LCJuYmYiOjAsImlhdCI6MTQ0NjgyNzk5OIwouldhaveToBeNutsUiLCJwcmVmZXJyZWRfdXNlcm5hbWUiOiJhZG1pbiIsImVtYWlsX3ZlcmlmaWVkIjpmYWxzZX0.DmG8Lm4niL1djzNrLsZ2CrsB1ZzUPnR2Nm7IZnrwrmkXsrPxjl6pyXKCWSj6pbk2sgVI8NNFqrGIJmEJ7gkTZWm328VGGpJsmMuJBki0KbqBRKORGQSgkas_34rwzhcTE3Iki8h_YVs2vvNIx_eZSOvIzyEcP3IGHuBoxcR6W3E&quot;,&quot;not-before-policy&quot;:0,&quot;session-state&quot;:&quot;62efc05c-1bf5-4f55-b749-5e0eff94155b&quot;}

----- 

In case anyone finds this post, this is what I ended up using:

    if hash jq 2&gt;/dev/null; then
      # Use the jq command to safely parse json
      bearerToken=$(echo $raw_json | jq -r &#39;.access_token&#39;)
    else
      # Strip away all but the &quot;access_token&quot; field&#39;s value using a perl regular expression
      bearerToken=$(echo $raw_json | grep -Po &#39;&quot;&#39;&quot;access_token&quot;&#39;&quot;\s*:\s*&quot;\K([^&quot;]*)&#39;)
    fi



What does &#39;\K&#39; mean in this regex?

What is the best way to find a specific string in the logs of a docker container? Let&#39;s say I want to see all requests, that are made in the &quot;nginx&quot; docker image that came from a ip starting with &quot;127.&quot;

grep wont work as expected on docker logs command:

    docker logs nginx |&#160;grep &quot;127.&quot;

It prints all logs, but does not filter the result!

Finding a string in docker logs of container

So, the thing is, I&#39;m on linux terminal using grep command and I want the output without all the lines where it prints at the beginning &quot;grep:&quot; or the lines that begins with &quot;./&quot;, because now I&#39;m getting something like this:

    grep: ./users/blabla1: Permission denied
    grep: ./users/blabla2: Permission denied
    grep: ./users/blabla3: Permission denied
    grep: ./users/blabla4: Permission denied
    grep: ./users/blabla5: Permission denied
    grep: ./users/blabla6: Permission denied
    grep: ./users/blabla7: Permission denied
    grep: ./users/blabla8: Permission denied
    ./foo/bar/log.log
    ./foo/bar/xml.xml


I have tried this:

    grep -irl &quot;foo&quot; . | grep -v &quot;Permission denied&quot;

I have also tried this one:
   

     grep -irl &quot;foo&quot; . | grep -v &quot;^grep:&quot;

And finally this one:
   
     grep -irl &quot;foo&quot; . | grep &quot;^./&quot;

But I keep getting same results as if I haven&#39;t put anything after the |, any ideas? What am I missing?

How can I exclude all “permission denied” result lines from “grep”?

I&#39;m struggling to see why the following is returning a code of 1.

    echo &#39;Total&#39; | grep -c No
    0

So &quot;No&quot; doesn&#39;t exists in &quot;Total&quot;. But then looking up its return code I&#39;m seeing it as 1.

    echo $?
    1

Why is return code showing up as 1? Is there a way to get around this?




Content Type	Original Author	Original Content on Stackoverflow
Question	RandyTek	View Question on Stackoverflow
Solution 1 - Linux	user184968	View Answer on Stackoverflow
Solution 2 - Linux	amadain	View Answer on Stackoverflow

How to suppress binary file matching results in grep

Linux Problem Overview

Linux Solutions

Solution 1 - Linux

Solution 2 - Linux

Fill remaining vertical space with CSS using display:flex

docker: executable file not found in $PATH

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