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# License at bottom.
# Initialize cdlog the first time.
if [ -z "$c1" ] ; then
c9=
c8=
c7=
c6=
c5=
c4=
c3=
c2=
fi
# One-letter nicknames for most recent four dirs.
cdlog.nicks()
{
x=$c1
y=$c2
z=$c3
w=$c4
}
# Change to directory: this is aliased to cd command.
cdlog.chdir()
{
local cur=$PWD
if command cd "$@" && [ "$PWD" != "$cur" ]; then
# only if we successfully change to a different
# directory do the following
if [ "$PWD" == "$c1" ] ; then
# If we changed to the directory that is most
# recent in the cdlog, then we just replace that
# entry by the one we are coming from.
c1=$cur
else
# Otherwise rotate through all
c9=$c8
c8=$c7
c7=$c6
c6=$c5
c5=$c4
c4=$c3
c3=$c2
c2=$c1
c1=$cur
fi
cdlog.nicks
fi
}
# Change to most recent diretory in cdlog and remove it
# from the log.
cdlog.pop()
{
if [ -n "$c1" ] && command cd "$c1"; then
c1=$c2
c2=$c3
c3=$c4
c4=$c5
c5=$c6
c6=$c7
c7=$c8
c8=$c9
c9=
cdlog.nicks
fi
}
# Print four recen cdlog entries.
cdlog()
{
# c5 through c9 are "hidden"
printf "c1/x: %s\n" "$c1"
printf "c2/y: %s\n" "$c2"
printf "c3/z: %s\n" "$c3"
printf "c4/w: %s\n" "$c4"
}
# Aliases.
alias cs='cdlog.chdir "$c1"'
alias cd='cdlog.chdir -P'
alias pd='cdlog.pop'
# Better completion for $x[Tab]
shopt -s direxpand
# Copyright 2024
# Kaz Kylheku <kaz@kylheku.com>
# Vancouver, Canada
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following condition is met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form need not reproduce any copyright notice.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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