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Using module 'subprocess' with timeout
...nux) in the context of an Apache module (like mod_python, mod_perl, or mod_php), I've found the use of signals and alarms to be disallowed (presumably because they interfere with Apache's own IPC logic). So to achieve the goal of timing out a command I have been forced to write "parent loops" which ...
How to get full path of a file?
...nd it...
jcomeau@intrepid:~$ python -c 'import os; print(os.path.abspath("cat.wav"))'
/home/jcomeau/cat.wav
jcomeau@intrepid:~$ ls $PWD/cat.wav
/home/jcomeau/cat.wav
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Can I see changes before I save my file in Vim?
...his in your vimrc or in the plugin directory, open a file, make some modifications without saving them, and do :DiffSaved.
function! s:DiffWithSaved()
let filetype=&ft
diffthis
vnew | r # | normal! 1Gdd
diffthis
exe "setlocal bt=nofile bh=wipe nobl noswf ro ft=" . filetype
endfunction...
Solving “Who owns the Zebra” programmatically?
...= "Norwegian German Dane Swede English".split()
pets = "birds dog cats horse zebra".split()
drinks = "tea coffee milk beer water".split()
cigarettes = "Blend, Prince, Blue Master, Dunhill, Pall Mall".split(", ")
# There are five houses.
minn, maxn = 1, 5
problem = Problem()
# val...
How can one pull the (private) data of one's own Android app?
...
Here is what worked for me:
adb -d shell "run-as com.example.test cat /data/data/com.example.test/databases/data.db" > data.db
I'm printing the database directly into local file.
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What's the meaning of interface{}?
... stored in interfaces might be arbitrarily large, but only one word is dedicated to holding the value in the interface structure, so the assignment allocates a chunk of memory on the heap and records the pointer in the one-word slot.
...
bash: shortest way to get n-th column of output
...e X in your .zshrc to be
alias -g X="| cut -d' ' -f2"
then you can do:
cat file X
You can take it one step further and define it for the nth column:
alias -g X2="| cut -d' ' -f2"
alias -g X1="| cut -d' ' -f1"
alias -g X3="| cut -d' ' -f3"
which will output the nth column of file "file". You...
Propagate all arguments in a bash shell script
...@ if you actually wish your parameters to be passed the same.
Observe:
$ cat foo.sh
#!/bin/bash
baz.sh $@
$ cat bar.sh
#!/bin/bash
baz.sh "$@"
$ cat baz.sh
#!/bin/bash
echo Received: $1
echo Received: $2
echo Received: $3
echo Received: $4
$ ./foo.sh first second
Received: first
Received: secon...
How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
...
Have you tried cat /proc/meminfo? You can then awk or grep out what you want, MemTotal e.g.
awk '/MemTotal/ {print $2}' /proc/meminfo
or
cat /proc/meminfo | grep MemTotal
...
What are the differences among grep, awk & sed? [duplicate]
...aining "This"
Every line containing "This"
Every line containing "This"
$ cat file.txt
Every line containing "This"
Every line containing "This"
Every line containing "That"
Every line containing "This"
Every line containing "This"
Now awk and sed are completly different than grep.
awk and sed ar...