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How to search for a string in text files?
...often faster than reading and checking line per line):
with open('example.txt') as f:
if 'blabla' in f.read():
print("true")
Another trick: you can alleviate the possible memory problems by using mmap.mmap() to create a "string-like" object that uses the underlying file (instead of re...
Rename a file in C#
...does not work when file names differ only in letter case. For example file.txt and File.txt
– SepehrM
Jul 6 '14 at 20:31
2
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How can I replace every occurrence of a String in a file with PowerShell?
...
Use (V3 version):
(Get-Content c:\temp\test.txt).replace('[MYID]', 'MyValue') | Set-Content c:\temp\test.txt
Or for V2:
(Get-Content c:\temp\test.txt) -replace '\[MYID\]', 'MyValue' | Set-Content c:\temp\test.txt
...
How to read/write from/to file using Go?
..."os"
)
func main() {
// open input file
fi, err := os.Open("input.txt")
if err != nil {
panic(err)
}
// close fi on exit and check for its returned error
defer func() {
if err := fi.Close(); err != nil {
panic(err)
}
}()
// open o...
scp (secure copy) to ec2 instance without password
... the arguments in the wrong order. This works:
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/
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val() doesn't trigger change() in jQuery [duplicate]
...rigger() or .change(), you can test it below using Chrome or Firefox.
txt.addEventListener('input', function() {
console.log('not called?');
})
$('#txt').val('test').trigger('input');
$('#txt').trigger('input');
$('#txt').change();
<script src="https://cdnjs.cloudflare.com/ajax/libs/...
Batch files: How to read a file?
...n use the for command:
FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k
Type
for /?
at the command prompt. Also, you can parse ini files!
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Extract a regular expression match
...gregexpr’ and ‘regexec’.
So this will work, and is fairly simple:
txt <- "aaa12xxx"
regmatches(txt,regexpr("[0-9]+",txt))
#[1] "12"
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How to delete a specific line in a file?
...r lines back, except for the line you want to delete:
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w") as f:
for line in lines:
if line.strip("\n") != "nickname_to_delete":
f.write(line)
You need to strip("\n") the newline chara...
Unix - create path of folders and file
...dir -p /my/other/path/here/ && touch /my/other/path/here/cpedthing.txt
Note: Previously I recommended usage of ; to separate the two commands but as pointed out by @trysis it's probably better to use && in most situations because in case COMMAND1 fails COMMAND2 won't be executed ei...