08-23-2008
can't open file for editing
I've created a user and would like to an an alias to the .bashrc file, however when I use
vi and write to the file the following is displayed:
".bashrc" E212: Can't open file for writing. Hit ENTER or type command to continue.
Entry within /etc/passwd for this user reads:
maqui:x:513:516::/home//maqui::
/bin/bash
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~
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~
~
~
~
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LEARN ABOUT DEBIAN
colordiff
COLORDIFF(1) COLORDIFF(1)
NAME
colordiff - a tool to colorize diff output
SYNOPSIS
colordiff [diff options] [colordiff options] {file1} {file2}
DESCRIPTION
colordiff is a wrapper for diff and produces the same output as diff but with coloured syntax highlighting at the command line to improve
readability. The output is similar to how a diff-generated patch might appear in Vim or Emacs with the appropriate syntax highlighting
options enabled. The colour schemes can be read from a central configuration file or from a local user ~/.colordiffrc file.
colordiff makes use of ANSI colours and as such will only work when ANSI colours can be used - typical examples are xterms and Eterms, as
well as console sessions.
colordiff has been tested on various flavours of Linux and under OpenBSD, but should be broadly portable to other systems.
USAGE
Use colordiff wherever you would normally use diff, or pipe output to colordiff:
For example:
$ colordiff file1 file2
$ diff -u file1 file2 | colordiff
You can pipe the output to 'less', using the '-R' option (some systems or terminal types may get better results using '-r' instead), which
keeps the colour escape sequences, otherwise displayed incorrectly or discarded by 'less':
$ diff -u file1 file2 | colordiff | less -R
If you have wdiff installed, colordiff will correctly colourise the added and removed text, provided that the '-n' option is given to
wdiff:
$ wdiff -n file1 file2 | colordiff
You may find it useful to make diff automatically call colordiff. Add the following line to ~/.bashrc (or equivalent):
alias diff=colordiff
Any options passed to colordiff are passed through to diff except for the colordiff-specific option 'difftype', e.g.
colordiff --difftype=debdiff file1 file2
Valid values for 'difftype' are: diff, diffc, diffu, diffy, wdiff, debdiff; these correspond to plain diffs, context diffs, unified diffs,
side-by-side diffs, wdiff output and debdiff output respectively. Use these overrides when colordiff is not able to determine the diff-type
automatically.
Alternatively, a construct such as 'cvs diff SOMETHING | colordiff' can be included in ~/.bashrc as follows:
function cvsdiff () { cvs diff $@ | colordiff; }
Or, combining the idea above using 'less':
function cvsdiff () { cvs diff $@ | colordiff |less -R; }
Note that the function name, cvsdiff, can be customized.
FILES
/etc/colordiffrc
Central configuration file. User-specific settings can be enabled by copying this file to ~/.colordiffrc and making the appropriate
changes.
colordiffrc-lightbg
Alternate configuration template for use with terminals having light backgrounds. Copy this to /etc/colordiffrc or ~/.colordiffrc and
customize.
BUGS
Bug reports and suggestions/patches to <davee@sungate.co.uk> please.
AUTHOR
colordiff is written and maintained by Dave Ewart <davee@sungate.co.uk>. This manual page and the source XML was written by Graham Wilson
<graham@mknod.org> for Debian and is maintained by the author. Dave Ewart maintains the Debian package.
01/25/2009 COLORDIFF(1)