I have a large directory of images and want to access the most recent one via command line. I want to show it using imagej, but the piping of the command does open imagej, but does not open an image:
ls -Art | tail -n 1| imagej
is the command I am using. Am I doing sth wrong? I am on a docker image using xubuntu.
If I only use the ls -Art | tail -n 1 i get the image: 1541917543_right.tiff. Which is shown correctly if I use the imagej command with the filename.
It might be a case of needing to use the --open option:
ls -Art | tail -n 1 | imagej --open
Or perhaps try using xargs:
ls -Art | tail -n 1 | xargs imagej --open
There was also a bug report filed regarding the opening images from cli (legacy version) on github. If the above suggestions don't work maybe post a response over there.
Put the imagej command at the end, you want to pipe the filename into the command
Related
I want to set up a target which downloads the latest s3 file containing _id_config within a path. So I know I can get the name of file I am interested in by
FILE=$(shell aws s3 ls s3:blah//xyz/mno/here --recursive | sort | tail -n 2 | awk '{print $4}' | grep id_config)
Now, I want to download the file to local with something like
download_stuff:
aws s3 cp s3://prod_an.live.data/$FILE .
But when I run this, my $FILE has some extra stuff like
aws s3 cp s3://blah/2022-02-17 16:02:21 2098880 blah//xyz/mno/here54fa8c68e41_id_config.json .
Unknown options: 2098880,blah/xyz/mno/here54fa8c68e41_id_config.json,.
Please can someone help me understand why 2098880 and the spaces are there in the output and how to resolve this. Thank you in advance.
Suggesting a trick with ls options -1 and -t to get the latest files in a folder:
FILE=$(shell aws s3 ls -1t s3:blah//xyz/mno/here |head -n 2 | grep id_config)
I'm trying to understand what's happening here out of curiosity, even though I can just copy and paste the output of the terminal to do what I need to do. The following command does not print anything.
ls /opt/local/var/macports/registry/portfiles -1 | sed 's/-.*//g' | sort -u | parallel "sudo port -N install" {} 2>&1 | grep -Po "Use '\K.*(?=')" | parallel "{}"
The directory I call ls on contains a bunch of filenames starting with the string I want to extract that ends at the first dash (so stringexample-4.2009 pipes stringexample into parallel (like xargs but to run each line separately). After running the command sudo port install <stringexample>, I get error outputs like so:
Unable to activate port <stringexample>. Use 'port -f activate <stringexample>' to force the activation.
Now, I wish to run port -f activate <stringexample>. However, I cannot seem to do anything with the output port -f activate gettext that I get to the terminal.
I cannot even do ... | grep -Po "Use '\K.*(?=')" | xargs echo or ... | grep -Po "Use '\K.*(?=')" >> commands_to_run.txt (the output stream to file only creates an empty file), despite the shorter part of the command:
ls /opt/local/var/macports/registry/portfiles -1 | sed 's/-.*//g' | sort -u | parallel "sudo port -N install {}" 2>&1 | grep -Po "Use '\K.*(?=')"
printing the commands to the terminal. Why does the pipe operator not work here? If the commands I wish to run are outputting to the terminal, surely there's got to be a way to capture them.
I am trying to execute a command based on extracting it from README file.
I was able to extract it using grep and sed:
cat README.md | grep -i "docker build" | grep -vi "dockerfile.debug" | sed 's/.*\(d[a-z]\).*/\1/'
This script would give a result something like 'docker build .'
I want to execute that command.
But I am not sure how to execute the extracted text. I thought 'exec' would work but I couldn't apply it. Please help me find a way to execute the text extracted through the above script.
Set your command in
$(CommandToExecute)
or back-ticks
`CommandToExecute`
As Example:
$(cat README.md | grep -i "docker build" | grep -vi "dockerfile.debug" | sed 's/.*\(d[a-z]\).*/\1/'
);
try:
$(grep -i "docker build" README.md | grep -vi "dockerfile.debug" | sed 's/.*\(d[a-z]\).*/\1/')
I use putty to connnect to a cubietruck board which has armbian debian jessie software on it. I want to see coloured live log of an app. I followed the following example using watch , tail and ccze together.
When I use the command :
tail -f app.log | ccze
It worked great. Also when I use the command :
watch `tail -f app.log`
It also worked great. However when I gave :
watch --color 'tail -f app.log | ccze'
or
watch -c 'tail -f app.log | ccze'
I get a lot of
(B
charachter and in the text in most of the cases no new lines are recognized and looks as seamless text. I assume that the color related ASCII characters are not decoded correctly.
I also changed the putty keyboard from ESC to VT400 and Linux but the same problem occured.
Does anyone has an idea what am I doing wrong?
watch -c -n5 'tail app.log | ccze -A'
Leaving out the -f parameter for tail, to stop tail watching for changes in the log file (because watch should do that)
Adding the -A parameter to ccze to enable raw ANSI colors
I maintained a list of links to some resources in my blog.
If I find a link is broken, I add a class="broken" to it.
Sometimes the broken links go to alive again, so I remove the class="broken".
When the list goes very long, it's very hard to check them one bye one.
<ul>
<li>a</li>
<li>b</li>
<li>c</li>
<li>d</li>
</ul>
How to write a bash script to do the editing?
Maybe it's not the answer you're looking for, but why doing it from bash, and not writing the page to use javascript that can do it on request basis / on the fly? This should get you going http://www.egrappler.com/jquery-broken-link-checker-plugin-jslink/
but I think it would be also possible to create similar logic on your own with jQuery $.get / $.load methods
Not quite appropriate task for Bash.
Option 1: I'd use Java or Groovy, have a SAX handler simply dump all data to output, except for the <a> elements for which it would check the href value, and if broken, add the class="broken" part.
Option 2: Have a XSLT which would call a custom XSLT function on <a> elements. Again, I'd do this with Java, but any language with a good XSLT engine can do that.
Option 3: If you really really want to feel geeky ;-) here's a line to get quite unreliable link checker for Bash:
grep -R '(?:href="(http://[^"]+)")' -ohPI | grep -oP 'http://[^"]+' | sort | uniq | wget -nv -S -O /dev/null -i - 2>&1 | grep -P '(wget:| -> |HTTP/|Location:)'
It could probably get better but I was okay with this.
Option 4: You could employ curl -L ... (the -L follows the redirects) instead of wget.
grep -R '(?:"(http://[^"]+)")' -ohPI | grep -v search.maven.org | grep -oP 'http://[^"]+' | sort | uniq | xargs -I{} sh -c 'echo && echo "$1" && curl -i -I -L -m 5 -s -S "$1"' -- {} 2>&1 | grep -P '(^$|curl:|HTTP/|http://|https://|Location:)'
Pro tip: curl seems to have more scripting friendly output, so you can make it parallel to speed things up: ... | xargs -n 1 -P 8 curl -L ... This will run 8 processes of curl, and pass one argument (URL) at a time. Sorting out the output is up to you, I'd probably create one file for each curl invocation and then concatenated.