Create a temp file in Linux
Answer:
To create a temp file in Linux, you can use the mktemp command
E.g.
# mktemp foo.XXXXXXXXXXX
foo.aAIYdsa5027
mktemp will replace XXXXX... by random characters and create that temp file for you.
Jan 252010
Linux Ask!
Jan 252010
How to get the PID in current bash shell script
Answer:
Use the special variable $$, you can get the PID (Process ID) of the current bash shell script
#/bin/bash
echo $$;
The above script will print the PID to the standard out.
Jan 242010
Serve current directory using HTTP with a single command
Answer:
Sometimes, you want to share some files in a given directory in your Linux system to other people, you might consider setup a NFS, Samba, FTP or so.
However, the easiest method is to export the directory using HTTP, with the help of Python.
E.g.
# cd /data/
python -m SimpleHTTPServer
Serving HTTP on 0.0.0.0 port 8000 ...
Now people can access the web server at port 8000 of your system's IP address, to access the /data directory.
Jan 242010
Visual Shell for Linux
Answer:
GNU Midnight Commander is a directory browser/file manager for Unix-like operating systems, you can use it to browser shell, ftp, tar and more.
To install in Ubuntu,
# sudo apt-get install mc
Reference:
Jan 232010
Using system directory stack with pushd & popd
Answer:
When you need to changes a lot of directory frequently, pushd & popd can be very useful
E.g.
john@localhost:/tmp $ pushd /home/jack/
# change to /home/jack/ and push to the stack
/home/jack /tmp
john@localhost:/home/jack $ pushd /home/mark/
# change to /home/mark/ and push to the stack
/home/mark /home/jack /tmp
john@localhost:/home/mark $ popd
# pop current directory and change to /home/jack
/home/jack /tmp
john@localhost:/home/jack $ popd
# pop current directory and change to /tmp
john@localhost:/tmp/ $
