dotfiles/home/shell/functions
2020-03-25 14:26:51 -05:00

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# Functions gathered from around the internet
# Takes 1st argument and attempts to extract them in the current directory
extract () { # Extracts most common compressed files
if [ -f $1 ] ; then
case $1 in
*.tar.bz2) tar xjf $1 ;;
*.tar.gz) tar xzf $1 ;;
*.bz2) bunzip2 $1 ;;
*.rar) rar x $1 ;;
*.gz) gunzip $1 ;;
*.tar) tar xf $1 ;;
*.tbz2) tar xjf $1 ;;
*.tgz) tar xzf $1 ;;
*.zip) unzip $1 ;;
*.Z) uncompress $1 ;;
*) echo "'$1' cannot be extracted via extract()" ;;
esac
else
echo "'$1' is not a valid file"
fi
}
# Takes 1st argument and makes a .tar.gz archive
maketgz() { tar cvzf "${1%%/}.tar.gz" "${1%%/}/"; }
# Takes 1st argument and makes a .zip archive
makezip() { zip -r "${1%%/}.zip" "$1" ; }
# Generate password - 1st argument is the number of characters, defaults to 20
gpass() {
local l=$1
[ "$l" == "" ] && l=20
tr -dc A-Za-z0-9-!@%^*_ < /dev/urandom | head -c ${l} | xargs
}
# Shows the current PS list for the signed in user - Not cygwin compatible
myps() { ps $@ -u $USER -o pid,%cpu,%mem,bsdtime,command ; }
# Searches the process list (ps) for 1st argument
psgrep() {
if [ ! -z $1 ] ; then
echo "Grepping for processes matching $1..."
ps aux | grep $1 | grep -v grep
else
echo "!! Need name to grep for"
fi
}
# dirsize - finds directory sizes and lists them for the current directory
dirsize (){
du -shx * .[a-zA-Z0-9_]* 2> /dev/null | \
egrep '^ *[0-9.]*[MG]' | sort -n > /tmp/list
egrep '^ *[0-9.]*M' /tmp/list
egrep '^ *[0-9.]*G' /tmp/list
rm -rf /tmp/list
}
# Usage: up <Number of directories>. Blank for up one dir.
up() {
local d=""
limit=$1
for ((i=1; i <= limit; i++)); do
d=$d/..
done
d=$(echo $d | sed 's/^\///')
if [ -z "$d" ]; then
d=..
fi
cd $d
}
# Usage: search <regex string>
search () {
grep -r "$1" | fzf
}
# Usage: replay <number of commands> to repeat. Blank for 1
replay() {
from="${1:-2}"
to="${2:-1}"
if [ "$from" -ne "$to" ]; then
for i in `seq "$from" -1 "$(($to + 1))"`; do
printf "$(fc -ln -${i} -${i}) && "
done
fi
$(fc -ln -${to} -${to})
}