Updater script - gokcehan/lf GitHub Wiki
The following script updates the lf
executable (in ~/bin
and its man page) to their latest version (on Linux 64 bit):
#!/usr/bin/env sh
# debug output and exit on error or use of undeclared variable or pipe error:
set -o xtrace -o errtrace -o errexit -o nounset -o pipefail
version="$(curl --location --head https://github.com/gokcehan/lf/releases/latest | grep -i location: | sed 's/^.*\/tag\/\([^\/]*\)\r$/\1/')"
filename="lf-linux-amd64.tar.gz"
uri_to_download="https://github.com/gokcehan/lf/releases/download/${version}/${filename}"
curl --fail --show-error --location "$uri_to_download" |
tar -xz -C /tmp/
mv --force /tmp/lf "${HOME}/bin/lf" &&
chmod a+x "${HOME}/bin/lf"
curl --fail --show-error --location https://raw.githubusercontent.com/gokcehan/lf/master/lf.1 --output "$HOME"/.local/share/man/man1/lf.1
if [ ! -x "${HOME}/bin/lf" ]; then
echo '"lf" was not successfully installed!' >&2
# DISPLAY=:0 notify-send --urgency=critical "Failed updating lf!
# Run $0 to check."
exit 2
fi
The following script updates the lf
executable (in /usr/local/bin
) and its man page system wide for all users to their latest version (on Linux ARM64 bit):
#!/bin/bash
# this updater-script was made to let it run as cron job on servers or anacron job on a workstation or laptop
# debug output and exit on error or use of undeclared variable or pipe error:
set -o xtrace -o errtrace -o errexit -o nounset -o pipefail
filename="lf-linux-arm64.tar.gz"
update_dir="/var/tmp/lf-update"
bin_dir="/usr/local/bin"
man_dir="/usr/local/share/man"
version="$(curl --location --head https://github.com/gokcehan/lf/releases/latest | grep -i location: | sed 's/^.*\/tag\/\([^\/]*\)\r$/\1/')"
uri_to_download="https://github.com/gokcehan/lf/releases/download/${version}/${filename}"
# check if update_dir exists
test -d "$update_dir" || mkdir -p "$update_dir" || exit 1
# check if file was downloaded at least once otherwise take timestamp from long ago
if test -f "${update_dir}/${filename}"; then tar_ts="$(stat -c %Y ${update_dir}/${filename})"; else tar_ts="946681201"; fi
# download only when it has changed
curl --etag-compare "$update_dir"/etag.txt --etag-save "$update_dir"/etag.txt --show-error -L "$uri_to_download" --output "$update_dir"/"$filename"
# when a new file was downloaded update the binary and the man page
if [ "$(stat -c %Y ${update_dir}/${filename})" -gt "$tar_ts" ]; then
tar -xzf "$update_dir"/"$filename" -C "$update_dir"/.
# move to the correct folder
mv --force "$update_dir"/lf "${bin_dir}/lf" && chmod a+x "${bin_dir}/lf"
# update the manual
curl --fail --show-error -LOJ https://raw.githubusercontent.com/gokcehan/lf/master/lf.1 --create-dirs --output-dir "${man_dir}/man1/"
# correct permissions of the manual file
chmod -R a=r,u+w,a+X "${man_dir}/man1"
# update the manuals database
mandb
fi
if [ ! -x "${bin_dir}/lf" ]; then
echo '"lf" was not successfully updated!' >&2
# DISPLAY=:0 notify-send --urgency=critical "Failed updating lf!"
# Run $0 to check."
exit 2
fi
exit 0