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Belgian Amiga Club - ADF Collection
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Stuff.sksh
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1990-01-21
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#*************************************************************************
# This file contains functions and aliases which can be cut out and put
# in your .skshrc file. They are not included there by default, since
# many people will not want them, or will want modified versions.
# These commands should operate with SKsh version 1.3 or later.
# They are also simple skeletons which can be expanded to add features.
#
# Also, please note that these commands have not been tested extensively.
#*************************************************************************
#*************************************************************************
# This is a "man" function which can be used to retrieve documentation
# files stored in a MAN: directory. These files (which are often
# included with public domain software as "readme" files) should be
# copied to a name such as "MAN:prog.MAN". Then, "man prog" can be used
# to retrieve the files with the "more" command. One useful extention
# would permit the use of a $PAGER variable instead of always using
# "more".
#*************************************************************************
function man {
if [ ! -f "MAN:$1.MAN" ]
then
echo "No manual entry for $1"
else
more "MAN:$1.MAN"
fi
}
#*************************************************************************
# This function accepts a number of parameters, and prompts the user
# for whether these files should be deleted. For example, "qrm *.o"
# would prompt the user at each .o file. Answering "Y" or "y" causes
# the file to be removed; otherwise, it is ignored. A useful extention
# would look at only the first character of the response, thus allowing
# "yes" to be used in place of "y".
#*************************************************************************
function qrm { # query rm
local ans
for file in $*
do
echo -n "Remove $file ? "
read ans
if [ "$ans" = 'y' -o "$ans" = 'Y' ]
then
rm -v "$file"
fi
done
}
#*************************************************************************
# This alias will remove emacs backup files by using the "qrm" function
# defined above. It could be extended to remove ".o" files, or anything
# else.
#*************************************************************************
alias clean='qrm *~'
#*************************************************************************
# The following functions implement directory push and pop operations.
# The first, pushd, accepts one argument. It cd's to that directory, but
# pushes the current working directory onto a stack, first, so that it
# can later be retrieved with a popd.
#*************************************************************************
function pushd {
if [ $# -ne 1 ]
then
echo "Usage: $0 new_dir"
else
DIRSTACK="$PWD,$DIRSTACK"
export DIRSTACK
cd "$1"
fi
}
#*************************************************************************
# This function implements the popd operation. It accepts no arguments,
# and simply pops a directory off the stack and returns to that point.
# it complains if the directory stack is empty.
#*************************************************************************
function popd {
local comma_pos new_dir
if [ $# -ne 0 ]
then
echo "Usage: $0"
return
elif [ -z "$DIRSTACK" ]
then
echo 'The directory stack is empty'
return
fi
comma_pos = $(expr index "$DIRSTACK" ',')
new_dir = $(expr substr "$DIRSTACK" 1 $(expr $comma_pos - 1))
DIRSTACK = $(expr substr "$DIRSTACK" $(expr $comma_pos + 1) 32000)
export DIRSTACK
cd "$new_dir"
}
#*************************************************************************
# These aliases clear and print the directory stack, respectively. The
# directory stack will be printed with a trailing comma, which is how it
# is stored. This could be cleaned up quite simply.
#*************************************************************************
alias cleard='DIRSTACK=""'
alias dstack='echo "$DIRSTACK"'