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Linux command or script counting duplicated lines in a text file?
...e same as borribles' but if you add the d param to uniq it only shows duplicates.
sort filename | uniq -cd | sort -nr
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PowerShell equivalent to grep -f
...helps somebody:
PowerShell:
PS) new-alias grep findstr
PS) ls -r *.txt | cat | grep "some random string"
Explanation:
ls - lists all files
-r - recursively (in all files and folders and subfolders)
*.txt - only .txt files
| - pipe the (ls) results to next command (cat)
cat...
How to concatenate multiple lines of output to one line?
If I run the command cat file | grep pattern , I get many lines of output. How do you concatenate all lines into one line, effectively replacing each "\n" with "\" " (end with " followed by space)?
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Relative paths based on file location instead of current working directory [duplicate]
..._path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
cd "$parent_path"
cat ../some.text
This will make your shell script work independent of where you invoke it from. Each time you run it, it will be as if you were running ./cat.sh inside dir.
Note that this script only works if you're invoki...
How does __proto__ differ from constructor.prototype?
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Object.prototype.Op1='';
Function.F1 = '';
Function.prototype.Fp1 = '';
Cat = function(){};
Cat.C1 = '';
Cat.prototype.Cp1 = '';
mycat = new Cat();
o = {};
// EDITED: using console.dir now instead of console.log
console.dir(mycat);
console.dir(o);
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How to extract one column of a csv file
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yes. cat mycsv.csv | cut -d ',' -f3 will print 3rd column.
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How to base64 encode image in linux bash / shell
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You need to use cat to get the contents of the file named 'DSC_0251.JPG', rather than the filename itself.
test="$(cat DSC_0251.JPG | base64)"
However, base64 can read from the file itself:
test=$( base64 DSC_0251.JPG )
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What is the difference between CMD and ENTRYPOINT in a Dockerfile?
...ple is good, it shows how to use an image as a "binary". When using ["/bin/cat"] as entrypoint and then doing docker run img /etc/passwd, you get it, /etc/passwd is the command and is passed to the entrypoint so the end result execution is simply /bin/cat /etc/passwd.
Another example would be to ha...
How can I parse a YAML file from a Linux shell script?
...n't work for all YAML, you're right. That's why I opened with a few qualifications. I just shared what worked for my use case, since it answered the question better than any other at the time. This can definitely be expanded.
– Curtis Blackwell
Nov 27 '13 at 13...
Unable to copy ~/.ssh/id_rsa.pub
...t; ~/.ssh/id_rsa.pub didn't work for me (ubuntu 14.04), but you can use :
cat ~/.ssh/id_rsa.pub
to get your public key
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