Default viewer script

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Revision as of 18:13, 18 July 2014 by Xaizek (talk | contribs) (Refer to $PATH description on Wikipedia)
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Default viewer script

This script can be used to view files for which no viewer is registered. Here is its source code:


if [ "$#" -ne 1 ]; then
    echo "Usage: $0 filename"
    exit 1

# upper limit of lines to display for text files
# upper limit of bytes to display for binary files
# language of text files
# output encoding for text files

info=$(head -$nlines "$1" | file --mime -)

if [ "x$charset" == "xbinary" ]; then
    hexdump -e '"%08_ax: "' -e '8/1 "%02x " "  " 8/1 "%02x "' -e '" |" 16/1 "%_p"' -e '"\n"' -v -n $nbytes "$1"
    head -$nlines "$1" | enconv -g -L $language -x $encoding

The script uses:

  1. head utility to process only first $nlines of file.
  2. file tool to determine whether file is of binary format or not.
  3. hexdump tool to display binary files in classic hex dump form.
  4. enconv program for automatic conversion to the $encoding charset for text files trying to guess source encoding of $language.

Plugging the script into vifm

To use it in vifm:

  1. Save the script as defviewer at one of directories listed in your $PATH environment variable or under $VIFM/scripts(most likely that it's ~/.vifm/scripts).
  2. On Unix-like operating systems make the script file executable by running
    chmod +x defviewer
  3. Add the following line to your *vifmrc*:
    fileview * defviewer %c

Here is what it looks like: