Base module

(in /home/bsgt/stablecaps_bashrc/modules/base_module.sh)

Function Index

01 - ips
02 - down4me
03 - myip
04 - pickfrom
05 - passgen
06 - mkcd
07 - lsgrep
08 - usage
09 - comex
10 - default-file-dir-perms-set
11 - buf
12 - del
13 - gedit
14 - nomacs
15 - Ngedit
16 - terminator
17 - grepo
18 - grepoall
19 - del_file_by_patt
20 - venv_create
21 - venv_activate

---

>> ips():

about: display all ip addresses for this host

group: base

function ips() {

    if command -v ifconfig &>/dev/null
    then
        ifconfig | awk '/inet /{ gsub(/addr:/, ""); print $2 }'
    elif command -v ip &>/dev/null
    then
        ip addr | grep -oP 'inet \K[\d.]+'
    else
        echo "You don't have ifconfig or ip command installed!"
    fi
}

---

>> down4me():

about: checks whether a website is down for you, or everybody

group: base

param: 1: website url

example: $ down4me http://www.google.com

function down4me() {

    curl -Ls "http://downforeveryoneorjustme.com/$1" | sed '/just you/!d;s/<[^>]*>//g'
}

---

>> myip():

about: displays your ip address, as seen by the Internet

group: base

function myip() {

    list=("http://myip.dnsomatic.com/" "http://checkip.dyndns.com/" "http://checkip.dyndns.org/")
    for url in ${list[*]}
    do
        res=$(curl -s "${url}")
        if [ $? -eq 0 ];then
            break;
        fi
    done
    res=$(echo "$res" | grep -Eo '[0-9\.]+')
    echo -e "Your public IP is: ${echo_bold_green} $res ${echo_normal}"
}

---

>> pickfrom():

about: picks random line from file

group: base

param: 1: filename

example: $ pickfrom /usr/share/dict/words

function pickfrom() {

    local file=$1
    [ -z "$file" ] && reference $FUNCNAME && return
    length=$(cat $file | wc -l)
    n=$(expr $RANDOM \* $length \/ 32768 + 1)
    head -n $n $file | tail -1
}

---

>> passgen():

about: generates random password from dictionary words

group: base

param: optional integer length

param: if unset, defaults to 4

example: $ passgen

example: $ passgen 6

function passgen() {

    local i pass length=${1:-4}
    pass=$(echo $(for i in $(eval echo "{1..$length}"); do pickfrom /usr/share/dict/words; done))
    echo "With spaces (easier to memorize): $pass"
    echo "Without (use this as the password): $(echo $pass | tr -d ' ')"
}

Function Calls:

└─ passgen
   └─ pickfrom

---

>> mkcd():

about: make one or more directories and cd into the last one

group: base

param: one or more directories to create

example: $ mkcd foo

example: $ mkcd /tmp/img/photos/large

example: $ mkcd foo foo1 foo2 fooN

example: $ mkcd /tmp/img/photos/large /tmp/img/photos/self /tmp/img/photos/Beijing

function mkcd() {

    mkdir -p -- "$@" && eval cd -- "\"\$$#\""
}

---

>> lsgrep():

about: search through directory contents with grep

group: base

function lsgrep() {

    ls | grep "$*"
}

---

>> usage():

about: disk usage per directory, in Mac OS X and Linux

group: base

param: 1: directory name

function usage() {

    if [ $(uname) = "Darwin" ]; then
        if [ -n "$1" ]; then
            du -hd 1 "$1"
        else
            du -hd 1
        fi

    elif [ $(uname) = "Linux" ]; then
        if [ -n "$1" ]; then
            du -h --max-depth=1 "$1"
        else
            du -h --max-depth=1
        fi
    fi
}

---

>> comex():

about: checks for existence of a command

group: base

param: 1: command to check

example: $ comex ls

function comex() {

    type "$1"  #&> /dev/null ;
}

---

>> default-file-dir-perms-set():

about: Recursively set directories to 0755 & files under pwd to 0644 octal perms

group: base

example: default-file-dir-perms-set

function default-file-dir-perms-set() {

    find . -type d -print0 | xargs -r -0 chmod 0755
    find . -type f -print0 | xargs -r -0 chmod 0644
}

---

>> buf():

about: back up file with timestamp

group: base

param: filename

example: buf $filename

function buf() {

    local filename=$1
    local filetime=$(date +%Y%m%d_%H%M%S)
    cp -a "${filename}" "${filename}_${filetime}"
}

---

>> del():

about: move files to hidden folder in tmp, that gets cleared on each reboot

group: base

param: file or folder to be deleted

example: del $filename

example: del $foldername

function del() {

    mkdir -p /tmp/.trash && mv "$@" /tmp/.trash;
}

---

>> gedit():

about: Opens non-blocking program from terminal

group: base

example: gedit $filename

function gedit() {

    command gedit "$@" &>/dev/null &
}

---

>> nomacs():

about: Opens non-blocking program from terminal

group: base

example: nomacs $filename

function nomacs() {

    command nomacs "$@" &>/dev/null &
}

---

>> Ngedit():

about: Opens non-blocking program from terminal

group: base

example: Ngedit $filename

function Ngedit() {

    command gedit --new-window "$@" &>/dev/null &
}

Function Calls:

└─ Ngedit
   └─ gedit

---

>> terminator():

about: Opens non-blocking program from terminal

group: base

example: terminator $filename

function terminator() {

    command terminator --geometry=945x1200+0+0 "$@" &>/dev/null &
}

---

>> grepo():

about: Find all files "*" recursively from current directory and grep within each file for a pattern

group: base

param: Pattern to grep for

example: grepo $PATERN

example: grepo import

function grepo() {
    find ./ -not -path "*/\.*" -not -path "*venv/*" -not -path "*node_modules/*" -name "*" -exec grep --color=auto -Isi "$1" {}  \;
}

---

>> grepoall():

about: Find all files "*" recursively from current directory and grep within each file for a pattern

group: base

param: 1. Pattern to grep for

param: 2. File type to find in double quotes

example: grepoall $PATERN

example: grepoall import

example: grepoall $PATERN $FILE_PATTERN

example: grepoall import "*.py"

function grepoall() {

    TXT_PATTERN="$1"
    if [[ $# -eq 2 ]]; then
        FILE_SEARCH="$2"
    else
        FILE_SEARCH="*"
    fi

    find ./ -not -path "*/\.*" -not -path "*venv/*" -not -path "*node_modules/*" -iname "${FILE_SEARCH}" -exec grep --color=auto -Isin "$TXT_PATTERN" {} /dev/null \;
}

---

>> del_file_by_patt():

about: Delete all files matching a pattern

group: base

param: 1. Delete pattern

example: del_file_by_patt $DEL_PATERN

example: del_file_by_patt "*.css"

function del_file_by_patt() {

    file_ext="$1"
    find . -name "$file_ext" -exec rm -fv {} \;
}

---

>> venv_create():

about: Create & activte a python virtual environment. Works with Python3

group: base

param: python version findable on path. Test with $(which)

example: venv_create python3.6

function venv_create() {

    if [[ $# -ge 1 ]]; then
        desired_py_version=$1
        pyth_ver=$(which $desired_py_version)
        if [[ -z "${pyth_ver}" ]]; then
            echo "python version $desired_py_version not found"
        else
            $pyth_ver -m venv venv
            source venv/bin/activate
        fi
    else
        echo "supply an arg"
    fi
}

---

>> venv_activate():

about: Activte an existing python virtual environment

group: base

param: python version findable on path. Test with $(which)

example: venv_activate

function venv_activate() {

    source venv/bin/activate
}