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How to ignore whitespace in a regular expression subject string?
...hes using a regular expression pattern? For example, if my search is for "cats", I would want "c ats" or "ca ts" to match. I can't strip out the whitespace beforehand because I need to find the begin and end index of the match (including any whitespace) in order to highlight that match and any w...
How to find out line-endings in a text file?
...
You can use the file utility to give you an indication of the type of line endings.
Unix:
$ file testfile1.txt
testfile.txt: ASCII text
"DOS":
$ file testfile2.txt
testfile2.txt: ASCII text, with CRLF line terminators
To convert from "DOS" to Unix:
$ dos2unix testf...
Sort a text file by line length including spaces
...
Answer
cat testfile | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2-
Or, to do your original (perhaps unintentional) sub-sorting of any equal-length lines:
cat testfile | awk '{ print length, $0 }' | sort -n | cut -d" "...
Checkout one file from Subversion
... a working branch of the file). Check out that directory and do your modifications.
I'm not sure whether you can then merge your modified copy back entirely in the repository without a working copy of the target - I've never needed to. If so then do that.
If not then unfortunately you may have to ...
In the shell, what does “ 2>&1 ” mean?
... actually be interpreted as "redirect stderr to a file named 1". & indicates that what follows is a file descriptor and not a filename. So the construct becomes: 2>&1.
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Concatenating Files And Insert New Line In Between Files
I have multiple files which I want to concat with cat .
Let's say
7 Answers
7
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How do I access my SSH public key?
...
cat ~/.ssh/id_rsa.pub or cat ~/.ssh/id_dsa.pub
You can list all the public keys you have by doing:
$ ls ~/.ssh/*.pub
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How to write multiple line string using Bash with variables?
...o) is wrong.
Correct would be:
#!/bin/bash
kernel="2.6.39"
distro="xyz"
cat >/etc/myconfig.conf <<EOL
line 1, ${kernel}
line 2,
line 3, ${distro}
line 4 line
...
EOL
cat /etc/myconfig.conf
This construction is referred to as a Here Document and can be found in the Bash man pages und...
What is the 'instanceof' operator used for in Java?
...c {}
class Animal {}
class Dog extends Animal implements Domestic {}
class Cat extends Animal implements Domestic {}
Imagine a dog object, created with Object dog = new Dog(), then:
dog instanceof Domestic // true - Dog implements Domestic
dog instanceof Animal // true - Dog extends Animal
dog ...
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...