Collection of bashrc functions (and their bash completions) I find useful

random_functions.sh

# execute an interactive python shell on a remote machine,
# over ssh, after coping my local pythonrc to that machine
# (my pythonrc available here: https://gist.github.com/lonetwin/5902720)
function rpython {
    DEST='/tmp/.pythonrc.py'
    scp -q $PYTHONSTARTUP $1:$DEST
    ssh -t $1 -- "PYTHONSTARTUP=$DEST python"
    ssh $1 "rm $DEST"
}
# - setup completion for rpython
complete -F _known_hosts rpython

# mount remote directories using sshfs (https://github.com/libfuse/sshfs)
# by executing "sshfs host:/dest/path $HOME/src/sshfs/dest/path",
# creating the mountpoint, if necessary. If leading / in /dest/path is
# missing, the path is relative to ~ on the destination
function mount_sshfs {
    local USAGE="Usage: mount_sshfs <hostname:[path]>"
    [ $# -lt 1 ] && echo $USAGE && return

    local srcpath="${1}"
    local destdir="${HOME}/src/sshfs/${srcpath/:*/}"
    [ -d "${destdir}" ] || mkdir -p "${destdir}"
    sshfs "${srcpath}" "${destdir}"
}
complete -F _known_hosts -S: mount_sshfs

function isolate {
    # - filter to select all lines starting with pattern in $1 upto the next
    # newline or the pattern in $2 if provided.
    # For example,
    #     $ cat /etc/passwd | isolate :500:500 :1000:1000
    # will print out all lines for uids between 500 and 1000 and
    #     $ cat /path/to/some_python_script.py | isolate 'def func_name'
    # will print out the definition of 'func_name()' (assuming of course that
    # the first line after the function definition is an empty line)
    sed -n "/${1}/,/${2:-^\$}/p"
}

function pdfcompress {
    # - reduce the size of a pdf file by re-writing it in lower resolution
    # (default to the gs option -dPDFSETTINGS=/ebook)
    local USAGE="USAGE: pdfcompress <inputfile> <outputfile> [<screen|ebook|printer|prepress>]"
    [ $# -lt 2 ] && echo $USAGE && return
    gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/${3:-ebook} -sOutputFile=$2 $1
}
complete -f -X '!*.pdf' pdfcompress