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How to replace an entire line in a text file by line number
...script and had no problems:
#Create temporary file with new line in place
cat /dir/file | sed -e "s/the_original_line/the_new_line/" > /dir/temp_file
#Copy the new file over the original file
mv /dir/temp_file /dir/file
This doesn't go by line number, but you can easily switch to a line number...
read.csv warning 'EOF within quoted string' prevents complete reading of file
...Archaeological Inference and Inductive Confirmation\t" "Sound and Sense in Cath Almaine\t" "Oak Galls Preserved by the Eruption of Mount Vesuvius in A.D. 79_ and Their Probable Use\t" "The Arts Four Thousand Years Ago\t" ...
## $ title : chr "Bruce D. Smith\t" "Tomás Ó Cathasaigh\t" "Hira...
How do I spool to a CSV formatted file using SQLPLUS?
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This would be a lot less tedious than typing out all of the fields and concatenating them with the commas. You could follow up with a simple sed script to remove whitespace that appears before a comma, if you wanted.
Something like this might work...(my sed skills are very rusty, so this will lik...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...查看该文件信息，具体信息如下：
[root@localhost mongodb]# cat students.dat
{ "_id" : { "$oid" : "5031143350f2481577ea81e5" }, "classid" : 1, "age" : 20, "name" : "kobe" }
{ "_id" : { "$oid" : "5031144a50f2481577ea81e6" }, "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : { "...
How do you add swap to an EC2 instance?
...', bs means 'block size' and count is the number of blocks you want to allocate… you can read the man page of the command for more info: linux.die.net/man/1/dd
– Fábio Batista
May 19 '14 at 22:23
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Read a file line by line assigning the value to a variable
...
#! /bin/bash
cat filename | while read LINE; do
echo $LINE
done
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How can I calculate an md5 checksum of a directory?
...g on here, I can only see solutions that would make the command more complicated then it's worth.
PS: one of my systems uses a limited busybox find which does not support -exec nor -print0 flags, and also it appends '/' to denote directories, while findutils find doesn't seem to, so for this machi...
Using an image caption in Markdown Jekyll
... the image from your markdown with:
{% include image.html url="/images/my-cat.jpg" description="My cat, Robert Downey Jr." %}
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Rest with Express.js nested router
...oute handling
router.use('/products', require('./products'));
router.use('/categories', require('./categories'));
// etc.
module.exports = router;
./routes/api/products.js:
var router = require('express').Router();
// api/products
router.get('/', function(req, res) {
res.json({ products: [] }...
Branch descriptions in Git
...s in ~/.gitconfig, under [alias]
cor = !sh -c 'git checkout $1 && cat README' -
After this, you can run git cor <branch_name> to switch branch and display the README of the branch you're switching to.
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