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#!/usr/bin/env zsh
# Docker
dsh() {
# Drop into a Docker shell. Shell defaults to /bin/bash.
container=$1
cmd=${2-/bin/bash}
docker exec -it "${container}" "${cmd}"
}
# Git
conflicts() {
# Edit git conflicts one-by-one in your favorite editor.
${EDITOR} "$(git status --porcelain | awk '/^UU/ { print $2 }')"
}
# GPG
gpg_encrypt() {
# Convenience function around encryping files and directories.
# Appends a .gpg extension and deletes the unencrypted source.
local file=${1}
echo "Encrypting..."
if [ -f "${file}" ]; then
gpg --symmetric "${file}" && \
rm "${file}"
elif [ -d "${file}" ]; then
tar -cz "${file}" | gpg --symmetric --output "${file}.tar.gz.gpg"
fi
echo "Done."
}
gpg_decrypt() {
# Convenience function around decrypting .gpg files and directories.
# Deletes the original encrypted file with the .gpg extension.
local file=$1
echo "Decrypting..."
if [ -f "${file}" ]; then
gpg --decrypt "${file}" >"${file%.gpg}" && \
rm "${file}"
elif [ -d "${file}" ]; then
local outdir="${dirname%.tar.gz.gpg}"
if [ -d "${outdir}" ]; then
echo "Output directory, ${outdir}, already exists and will be overwritten by this command. Aborting..."
return 1
else
gpg --decrypt "${dirname}" | tar -xv
fi
fi
echo "Done."
}
# Python
python_sandbox() {
# Creates a nix-shell with the specified arguments as Python packages
nix-shell -p "python36.withPackages(p: with p; [$@])"
}
# Haskell
cabal_unhell() {
# Run this function to save yourself from Cabal hell.
# Note: this will require that you reinstall packages for your projects again.
find ~/.ghc -maxdepth 1 -type d -exec rm -rf {} \;
rm -rf ~/.cabal/{lib,packages,share}
}
haskell_sandbox() {
# Creates a nix-shell with the specified arguments as Haskell packages
nix-shell -p "haskellPackages.ghcWithPackages (p: with p; [$@])"
}
_haskell_test_watch_path() {
# Runs and watches the tests for a provided file path.
ghcid -c "stack ghci grid:lib grid:grid-test --ghci-options=-fobject-code" \
--height="$(tput lines)" --width="$(tput cols)" --warnings --test "$1"
}
_haskell_test_watch_pattern() {
# Runs and watches the tests that match a provided pattern.
stack test --file-watch grid:grid-test --ta "-p \"${1}\""
}
haskell_test_watch() {
# Accepts either a filepath or a pattern and runs a test-watcher for either.
if [ -f "$1" ]; then
_haskell_test_watch_path "$1"
else
_haskell_test_watch_pattern "$1"
fi
}
# Kubernetes
kush() {
# Drop into a shell via Kubernetes. Shell defaults to /bin/bash.
local name=$1
local cmd=${2-/bin/bash}
kubectl exec -it "${name}" -- "${cmd}"
}
# Misc
path() {
# Pretty-print the $PATH variable
echo "$PATH" | tr : '\n'
}
nix_store() {
# Print the packages in /nix/store without the preceding hash
ls /nix/store | sed 's/[a-z0-9]*-//'
}
browse() {
# Open a URL in $BROWSER. Friendly for terminal input and output.
nohup "$BROWSER" $@ &
}
essids() {
# Returns a list of all ESSIDs the network card detects
local interface=${1-wlp4s0}
sudo iwlist "${interface}" scan | awk -F \" '{print $2}' | sed '/^\s*$/d'
}
mkdir_cd() {
# Make and cd into a directory or path
mkdir -p "$1" && cd "$1"
}
swap() {
# Swaps the names of files and directories.
local file_a="${1}"
local file_b="${2}"
if [ -d "${file_a}" ] && [ -d "${file_b}" ]; then
local backup=$(mktemp -d backup.XXX)
mv "${file_a}" "${backup}"
mv "${file_b}" "${file_a}"
mv "${backup}/${file_a}" "${file_b}"
rm -rf "${backup}"
elif [ -f "${file_a}" ] && [ -f "${file_b}" ]; then
local backup=$(mktemp backup.XXX)
mv "${file_a}" "${backup}"
mv "${file_b}" "${file_a}"
mv "${backup}" "${file_b}"
rm "${backup}"
fi
echo "Swapped: ${file_a} <-> ${file_b}"
}
bak() {
# Backup a file or a directory by appending a .bak extension to it.
mv "$1" "$1.bak"
}
unbak() {
# Restore a file by removing the .bak extension from it.
mv "$1.bak" "$1"
}
is_online() {
# Pings google.com and echos "Online" or "Offline" and returns the appropriate
# exit code. Could be useful in the ${PS1} variable.
wget -q --spider "http://google.com"
if [ $? -eq 0 ]; then
echo "Online"
return 0
else
echo "Offline"
return 1
fi
}
du_it_live() {
# Outputs and refreshes the size of a directory's content.
# Useful for watching a directory as large amounts of data are
# downloaded into it.
local directory="${1}"
while true; do
du -hc "${directory}" | tail -n 1 | tr -d '\n' && echo -n ' ' && sleep 0.5
# elipsis
echo -n '.' && sleep 0.5 &&
echo -n '.' && sleep 0.5 &&
echo -n '.' && sleep 0.5 &&
# clear the three-dots
echo -n '\b\b\b' && echo -n ' ' && echo -n '\r'
done
}
router() {
# Returns the IP address of the network's router.
# Useful in a call like `ping $(router)` to diagnose an internet problem.
netstat -nr | grep default | head -n 1 | awk '{ print $2 }'
}
monitor_dimensions() {
# Outputs the dimensions of your computer monitor
xdpyinfo | awk '/dimensions/{ print $2 }'
}
lt() {
# Convenience wrapper around `exa --tree`.
# Optionally accepts a number for the max-depth and a directory to list.
# $ lt 2 ./scripts
# lt
if [ -z ${1} ]; then
exa --tree --all
# lt 2
elif [[ "${1}" =~ '^[0-9]+$' ]] && [ -z ${2} ]; then
local depth="${1}"
exa --tree -all --level "${depth}"
# lt ./scripts
elif [ -z ${2} ]; then
local directory="${1}"
exa --tree --all "${directory}"
# lt 2 ./scripts
else
local depth=${1}
local directory="${2}"
exa --tree --all --level ${depth} "${directory}"
fi
}
gql() {
# Convenience wrapper around `http POST` that allows you write GQL queries in
# Vim before posting them to the server.
local endpoint="${1}"
local query="/tmp/http-query.gql"
vim "${query}" && \
echo "{\"query\":\"$(cat ${query})\"}" | \
http --body POST "${endpoint}"
}
# Nix
nix_introspect() {
# Greps through my local nixpkgs repo for
rg --after-context 5 "\\b$1\\b\\s*=" "$(nix-instantiate --find-file nixpkgs)"
}
# Tmux
t() {
# Find or create a Tmux session.
local session_name="${1}"
if ! tmux has-session -t "${session_name}" 2> /dev/null; then
local oldTMUX="${TMUX}"
unset TMUX
tmux new -d -s "${session_name}" -n "${session_name}"
export TMUX="${oldTMUX}"
unset oldTMUX
if command -v j >/dev/null; then
tmux send-keys -t "${session_name}" "j ${session_name}; clear" "C-m"
else
tmux send-keys -t "${session_name}"
fi
fi
if [[ -n "${TMUX}" ]]; then
tmux switch-client -t "${session_name}"
else
tmux attach -t "${session_name}"
fi
}
tk() {
# `tk`: "tmux kill". Kills a tmux session by name.
# If no arguments are provided, kills the current session after jumping to the previous session.
session_name="${1}"
if [ ! -z "${session_name}" ]; then
tmux kill-session -t "${session_name}"
else
session_name=tmux ls -f '#{?session_attached,#{session_name},}' | xargs
tmux switch-client -l
tmux kill-session -t "${session_name}"
fi
}
# zsh
zle_insert_subshell() {
LBUFFER+='$(' ; RBUFFER=")$RBUFFER"
}
zle -N zle_insert_subshell
bindkey '^j' zle_insert_subshell
zle_insert_variable() {
LBUFFER+='${' ; RBUFFER="}$RBUFFER"
}
zle -N zle_insert_variable
bindkey '^v' zle_insert_variable
zle_insert_2x_dash() {
LBUFFER+=' --'
}
zle -N zle_insert_2x_dash
bindkey '^[^f' zle_insert_2x_dash
zle_insert_2x_quote() {
LBUFFER+=' "' ; RBUFFER="\"$RBUFFER"
}
zle -N zle_insert_2x_quote
bindkey '^["' zle_insert_2x_quote
zle_insert_quote() {
LBUFFER+=" '" ; RBUFFER="'$RBUFFER"
}
zle -N zle_insert_quote
bindkey "^['" zle_insert_quote
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