main script

emerge-zip (text/plain), 1.72 KB, created by Diether Knof on 2006-03-09 13:33:31 UTC

#!/bin/bash

# media to mount
MEDIA=/media/usbstick
# directory to save the file list to
DIR=${MEDIA}/portage
# directory with the distfiles
DISTFILES_DIR=/usr/portage/distfiles
# directory with the script filesj
SCRIPTS_DIR=~/bin

# mount the media
mount ${MEDIA} 2>/dev/null
mkdir -p ${DIR}/distfiles

# check for write access
touch ${DIR}/distfiles/Files \
|| ( echo "cannot touch '${DIR}/distfiles/Files'"; \
     echo "make sure that '${DIR}/distfiles' is a directory";\
     echo "exiting"; \
     false ) || exit


# echo the prompt
echo "emerge-zip $@"

# save the packages and the command
echo "$@" >> ${DIR}/packages
echo "echo emerge -a $@        && emerge -a $@" >> ${DIR}/install

# Checks whether the files exists in the local distfiles directory
# If not, then the internet addresses are added to the 'Files' file
# params: internet addresses of the files
function check_for_files() {
  if [ -f ${DISTFILES_DIR}/$(basename $1) ]; then return; fi
  # print the parameters at one line each
  for f in $@; do echo $f; done
} # function check_for_files()

# Create the list of files to be downloaded.
# Then split the emerge output into lines and for each line (= file) check
# whether the file is already on the system. Else save the file in 'Files'
emerge -fp "$@" 2>&1 >/dev/null \
| grep -v "^$" \
| while read line; do
    check_for_files $line
  done \
  >> ${DIR}/Files

# copy the fetch and move scripts
cp ${SCRIPTS_DIR}/emerge-zip ${DIR}/
cp ${SCRIPTS_DIR}/fetch-files ${DIR}/
cp ${SCRIPTS_DIR}/move-files ${DIR}/

# print some statistics
echo -n "'Files' has $(wc -l < ${DIR}/Files) lines, "
echo -n "$(sort -u ${DIR}/Files | wc -l) locations "
echo    "and $(for f in `sort -u ${DIR}/Files`; do basename $f; done | sort -u | wc -l) files."