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Why should text files end with a newline?
... Unix tools expect this convention and work with it. For instance, when concatenating files with cat, a file terminated by newline will have a different effect than one without:
$ more a.txt
foo
$ more b.txt
bar$ more c.txt
baz
$ cat {a,b,c}.txt
foo
barbaz
And, as the previous example also demonst...
Remove duplicate lines without sorting [duplicate]
...
Surely it would be less obfuscated to name that array e.g. seen instead of x, to avoid giving newbies the impression that awk syntax is line noise
– Josip Rodin
Dec 21 '15 at 10:43
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How to check if a value exists in an array in Ruby
I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird'] .
26 Answers
26
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How to retrieve a single file from a specific revision in Git?
... <rev>
show a list of one or more 'blob' objects within a commit
git cat-file blob <file-SHA1>
cat a file as it has been committed within a specific revision (similar to svn
cat).
use git ls-tree to retrieve the value of a given file-sha1
git cat-file -p $(git-ls-tree $REV $file | cut -d...
Regex: match everything but specific pattern
... answered Nov 6 '09 at 13:40
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How to split a comma-separated string?
... Keep in mind this won't trim the values so strings.get(1) will be " cat" not "cat"
– Alb
Jun 28 '13 at 15:33
46
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In Bash, how do I add a string after each line in a file?
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I prefer echo. using pure bash:
cat file | while read line; do echo ${line}$string; done
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How to add Git's branch name to the commit message?
...)
DESCRIPTION=$(git config branch."$NAME".description)
echo "$NAME"': '$(cat "$1") > "$1"
if [ -n "$DESCRIPTION" ]
then
echo "" >> "$1"
echo $DESCRIPTION >> "$1"
fi
Creates following commit message:
[branch_name]: [original_message]
[branch_description]
I'm using issu...
How to assign a heredoc value to a variable in Bash?
...
You can avoid a useless use of cat and handle mismatched quotes better with this:
$ read -r -d '' VAR <<'EOF'
abc'asdf"
$(dont-execute-this)
foo"bar"''
EOF
If you don't quote the variable when you echo it, newlines are lost. Quoting it preserves t...
Awaiting multiple Tasks with different results
...ou use WhenAll, you can pull the results out individually with await:
var catTask = FeedCat();
var houseTask = SellHouse();
var carTask = BuyCar();
await Task.WhenAll(catTask, houseTask, carTask);
var cat = await catTask;
var house = await houseTask;
var car = await carTask;
You can also use Ta...