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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...ehow:
strace -ewrite -p $PID 2>&1 | grep "write(1"
shows only descriptor 1 calls. 2>&1 is to redirect STDERR to STDOUT, as strace writes to STDERR by default.
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How to assign the output of a Bash command to a variable? [duplicate]
...`. (So do other shells, this is a standard feature.) So you can write your script like this:
#!/bin/bash
until [ "$PWD" = "/" ]; do
echo "$PWD"
ls && cd .. && ls
done
Note the use of double quotes around the variable references. They are necessary if the variable (here, the c...
ReactJS - Does render get called any time “setState” is called?
...
If your state contains a relatively large javascript object (~1k total properties), which is rendered as a large tree of components (~100 total)... should you let the render functions construct the virtual dom, or should you, before setting the state, compare the new sta...
Android Studio Gradle Configuration with name 'default' not found
... > Android-Gradle.
Add build.gradle to your module.
Add the following script
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.6.+'
}
}
apply plugin: 'android-library'
repositories {
mavenCentral()
}
android {
compileSdkVers...
Installing pip packages to $HOME folder
... need to. The trick is passing the PEP370 --user argument to the setup.py script. With the latest version of pip, one way to do it is:
pip install --user mercurial
This should result in the hg script being installed in $HOME/.local/bin/hg and the rest of the hg package in $HOME/.local/lib/pytho...
Enable access control on simple HTTP server
I have the following shell script for a very simple HTTP server:
4 Answers
4
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How to reuse existing C# class definitions in TypeScript projects
I am just going to start use TypeScript in my HTML client project which belongs to a MVC project with a entity framework domain model already there. I want my two projects (client side and server side) totally separated as two teams will work on this... JSON and REST is used to communicate objects...
Usage of sys.stdout.flush() method
... @Ciastopiekarz How do you figure? If I take Andrew Clark's Python script, and replace the print line with sys.stdout.write("%d" % i), then I have to uncomment the call to sys.stdout.flush() to get the buffer to display as the script is executing.
– Bacon Bits
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How can I strip first X characters from string using sed?
I am writing shell script for embedded Linux in a small industrial box. I have a variable containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} does...
Permission denied on accessing host directory in Docker
... container user to run the application inside the container. The important script for this is fix-perms in my base image scripts, which can be found at: https://github.com/sudo-bmitch/docker-base
The important bit from the fix-perms script is:
# update the uid
if [ -n "$opt_u" ]; then
OLD_UID=$(...