Commands by wam (2)

  • Does an 'ls' on just the files and directories in the current directory with an execute bit turned on. This version will list directories. Just tack on "-type f" to the start of the find to omit listing directories and list only files.

    ls -dF `find . -maxdepth 1 \( -perm -1 -o \( -perm -10 -o -perm -100 \) \) -print`
    wam · 2009-02-05 16:59:38 0
  • Function to remove a specified path from your PATH environment variable. Show Sample Output

    pathrm() { PATH=`echo $PATH | sed -e "s=^${1}:==;s=:${1}$==;s=:${1}:=:="`; }
    wam · 2009-02-05 16:25:12 0

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Use curl to save an MP3 stream
I use this with cron to timeshift radio programs from a station's live stream. You will get an error message at the end like "curl: (28) Operation timed out after 10000 milliseconds with 185574 bytes received"; to suppress that but not other error messages, you can append "2>&1 | grep -v "(28)"" to the end of the command.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Limit the cpu usage of a process
Similar to `cpulimit`, although `prlimit` can be found shipped with recent util-linux. Example: limit CPU consumption to 10% for a math problem which ordinarily takes up 100% CPU: Before: $ bc -l

ASCII webcam live stream video using mplayer
Mplayer starts a webcam capture using ASCII art. Only mplayer required

reverse-i-search: Search through your command line history
"What it actually shows is going to be dependent on the commands you've previously entered. When you do this, bash looks for the last command that you entered that contains the substring "ls", in my case that was "lsof ...". If the command that bash finds is what you're looking for, just hit Enter to execute it. You can also edit the command to suit your current needs before executing it (use the left and right arrow keys to move through it). If you're looking for a different command, hit Ctrl+R again to find a matching command further back in the command history. You can also continue to type a longer substring to refine the search, since searching is incremental. Note that the substring you enter is searched for throughout the command, not just at the beginning of the command." -

Find files and calculate size of result in shell
Find files and calculate size with stat of result in shell

Virtual Console lock program
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shut of the screen ( Fool proof )
Use the command to create a script and bind it to a key using keyboard shortcut. eg: Script locks the screen in a loop until the command is executed again.At first it

scroll file one line at a time (w/only UNIX base utilities)
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convert a web page into a png
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