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Frozen Fish 1: Amiga
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1993-02-14
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835b
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28 lines
# push - change directory, keeping the current directory on a stack so
# that you can return to it later (see pop). If no directory stack exists
# push creates one of depth 10 (see the line: array Push_dirs[10]).
#
# Push is presented as is; no warrantee is either expressed or implied
# as to it's suitability to any purpose whatsoever. You assume all the
# risk for all damage, even if caused by a defect in the software,
# no matter how awful.
if #argv != 2
echo "usage: push dir"
return 0
elseif !?Dir_stack || !?Push_dirs
array Push_dirs[10]
set Dir_stack 0
if ?_debug
echo initializing directory stack - depth: $#Push_dirs
endif
elseif Dir_stack>=#Push_dirs
echo "Directory stack full"
return 10
endif
local here=cwd
cd $argv[1]
if status==0
Push_dirs[Dir_stack]=here
Dir_stack++
endif