Commands by tarkasteve (2)

  • A better 'apt-cache' using Xapian to rank results

    A replacement for 'apt-cache' that uses a Xapian to produce ranked results. Available in 'apt-xapian-index' 0.27 and higher. Show Sample Output


    0
    axi-cache search <searchterm>
    tarkasteve · 2010-07-05 00:16:03 5
  • Search back through previous commands

    Searches backwards through your command-history for the typed text. Repeatedly hitting Ctrl-R will search progressively further. Return invokes the command. Show Sample Output


    15
    Ctrl-R <search-text>
    tarkasteve · 2009-09-20 05:07:31 14

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Adding Prefix to File name
Good old bracket expansion :-) For large numbers of files, "rename" will spare you the for-loop, or the find/exec...

Swap a file or dir with quick resotre
This lets you replace a file or directory and quickly revert if something goes wrong. For example, the current version of a website's files are in public_html. Put a new version of the site in public_html~ and execute the command. The names are swapped. If anything goes wrong, execute it again (up arrow or !!).

Check if a command is available in your system
Usefull to detect if a commad that your script relies upon is properly installed in your box, you can use it as a function function is_program_installed() { type "$1" >/dev/null } Invoke it and check the execution code is_program_installed "dialog" if [ ! $? -eq 0 ]; then echo "dialog is not installed" exit 1 fi

Quickly display a string as Qr Code
Takes the first argument (string) and display a Qr code version of that.

Install pip with Proxy
Installs pip packages defining a proxy

finding cr-lf files aka dos files with ^M characters
Looking for carriage returns would also identify files with legacy mac line endings. To fix both types: $ perl -i -pe 's/\r\n?/\n/g' $(find . -type f -exec fgrep -l $'\r' "{}" \;)

show current directory
Opens a file or URL in the user's preferred application.

Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

create a nicely formatted example of a shell command and its output
Shell function which takes a bash command as its input, and displays the following formatted output: EXAMPLE: command OUTPUT: output from command

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