echo >> zsh

zsh
$ echo "somthing" >> file
zsh: Нет такого файла или каталога: file
$ echo "somthing" > file
$ cat file
somthing
$ echo "somthing" > file
zsh: Файл существует: file
$ bash
john@localhost ~ $ echo "somthing" >> file
john@localhost ~ $ cat file
somthing
somthing

app-shells/zsh (gdbm pcre unicode)

home_% echo $SHELL
/bin/zsh
home_% echo "sometext" >> file
home_% cat file
sometext
home_% echo "sometext" > file 
home_% cat file              
sometext
home_% echo "nexttext" >> file
home_% cat file               
sometext
nexttext
home_% 

# разукрашиваем ls и автодополнение
export LS_COLORS='no=00;37:fi=00;37:di=01;36:ln=04;36:pi=33:so=01;35:do=01;35:bd=33;01:cd=33;01:or=31;01:su=37:sg=30:tw=30:ow=34:st=37:ex=01;31:*.cmd=01;31:*.exe=01;31:*.com=01;31:*.btm=01;31:*.sh=01;31:*.run=01;31:*.tar=33:*.tgz=33:*.arj=33:*.taz=33:*.lzh=33:*.zip=33:*.z=33:*.Z=33:*.gz=33:*.bz2=33:*.deb=33:*.rpm=33:*.jar=33:*.rar=33:*.jpg=32:*.jpeg=32:*.gif=32:*.bmp=32:*.pbm=32:*.pgm=32:*.ppm=32:*.tga=32:*.xbm=32:*.xpm=32:*.tif=32:*.tiff=32:*.png=32:*.mov=34:*.mpg=34:*.mpeg=34:*.avi=34:*.fli=34:*.flv=34:*.3gp=34:*.mp4=34:*.divx=34:*.gl=32:*.dl=32:*.xcf=32:*.xwd=32:*.flac=35:*.mp3=35:*.mpc=35:*.ogg=35:*.wav=35:*.m3u=35:';
export GREP_COLOR="1;33"
[[ -x $(whence -p most) ]]; export PAGER=$(whence -p most)
export EDITOR="/usr/bin/vim"
export DIRSTACKSIZE=20
export PAGER="/usr/bin/most"
# export PAGER='less -X -M'
export PATH="$PATH":/usr/local/sbin
export LANG="ru_RU.UTF-8"
export LC_ALL="ru_RU.UTF-8"
export LC="ru_RU.UTF-8"
export LESSCHARSET="UTF-8"
HISTFILE=~/.zsh_history
SAVEHIST=1000
HISTSIZE=1000
zstyle ':completion:*' menu yes select
zstyle ':completion:*' menu select=2
zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*' verbose yes
zstyle ':completion:*:descriptions' format '%U%B%d%b%u'
zstyle ':completion:*:messages' format '%d'
zstyle ':completion:*:warnings' format 'No matches for: %d'
zstyle ':completion:*' group-name ''
zstyle ':completion:*' squeeze-slashes true # Remove trailing slashes
zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
zstyle ':completion:*' use-cache on
zstyle ':completion:*' cache-path ~/.zsh_cache
zstyle ':completion:*:(all-|)files' ignored-patterns '(|*/)CVS'
zstyle ':completion:*:cd:*' ignored-patterns '(*/)#CVS'
zstyle ':completion:*' completer _complete _match _approximate
zstyle ':completion:*:match:*' original only
# zstyle ':completion:*:approximate:*' max-errors 1 numeric
zstyle -e ':completion:*:approximate:*' max-errors 'reply=($((($#PREFIX+$#SUFFIX)/3))numeric)'
zstyle ':completion:*:functions' ignored-patterns '_*'
zmodload zsh/complist
zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*:rm:*' ignore-line yes
zstyle ':completion:*:mv:*' ignore-line yes
zstyle ':completion:*:cp:*' ignore-line yes
zstyle ':completion:*:sudo:*' command-path /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /usr/X11R6/bin
zstyle ':completion:*:*:kill:*:processes'   list-colors "=(#b) #([0-9]#)*=36=31"
zstyle ':completion:*:*:kill:*'             menu yes select
zstyle ':completion:*:kill:*'               force-list always
zstyle ':completion:*:*:killall:*'          menu yes select
zstyle ':completion:*:killall:*'            force-list always
zstyle ':completion:*:processes'            command "ps -au$USER"
zstyle ':completion:*:cd:*' ignore-parents parent pwd
autoload -Uz compinit; compinit
autoload zkbd
autoload colors; colors
autoload -U edit-command-line
autoload -U url-quote-magic
autoload -U zcalc
bindkey -e
bindkey "^[[A" history-search-backward
bindkey "^[[B" history-search-forward
bindkey "\e[1~" beginning-of-line # Home
bindkey "\e[4~" end-of-line # End
bindkey "\e[5~" beginning-of-history # PageUp
bindkey "\e[6~" end-of-history # PageDown
bindkey "\e[2~" quoted-insert # Ins
bindkey "\e[3~" delete-char # Del
bindkey "\e[5C" forward-word
bindkey "\eOc" emacs-forward-word
bindkey "\e[5D" backward-word
bindkey "\eOd" emacs-backward-word
bindkey "\e\e[C" forward-word
bindkey "\e\e[D" backward-word
bindkey "\e[Z" reverse-menu-complete # Shift+Tab
bindkey "\e[7~" beginning-of-line # Home
bindkey "\e[8~" end-of-line # End
bindkey "\eOH" beginning-of-line
bindkey "\eOF" end-of-line
bindkey "\e[H" beginning-of-line
bindkey "\e[F" end-of-line
# Options {{{
setopt   auto_cd autocd
setopt   hist_ignore_all_dups
setopt   hist_ignore_space  histignoredups
setopt   inc_append_history
setopt   APPEND_HISTORY
setopt   autopushd pushdminus pushdsilent pushdtohome
setopt   cdablevars
setopt   ignoreeof # Prevent from using Ctrl + d
setopt   interactivecomments
# setopt nobanghist
setopt   noclobber
setopt   HIST_REDUCE_BLANKS
setopt   HIST_IGNORE_SPACE
setopt   SH_WORD_SPLIT
setopt   nohup
setopt   chase_links
setopt   hist_verify
setopt   extendedglob # Use regexp in commands (ex : cp ^*.(tar|bz2|gz))
setopt   IGNORE_EOF
setopt   nullglob
setopt   notify globdots autolist
# setopt  correct correctall
setopt   recexact longlistjobs
setopt   autoresume rcquotes mailwarning
unsetopt bgnice autoparamslash
unsetopt beep
unsetopt hist_beep
unsetopt list_beep
unsetopt BSD_ECHO
unalias  run-help
autoload run-help
set always_to_end
# }}}
## Coloring man pages
man() {
    env \
        LESS_TERMCAP_mb=$(printf "\e[1;37m") \
        LESS_TERMCAP_md=$(printf "\e[1;37m") \
        LESS_TERMCAP_me=$(printf "\e[0m") \
        LESS_TERMCAP_se=$(printf "\e[0m") \
        LESS_TERMCAP_so=$(printf "\e[1;47;30m") \
        LESS_TERMCAP_ue=$(printf "\e[0m") \
        LESS_TERMCAP_us=$(printf "\e[0;36m") \
            man "$@"
}
# распаковка архива
extract () {
    if [ -f $1 ] ; then
        case $1 in
            *.tar.bz2)   tar xjf $1        ;;
            *.tar.gz)    tar xzf $1     ;;
            *.bz2)       bunzip2 $1       ;;
            *.rar)       unrar x $1     ;;
            *.gz)        gunzip $1     ;;
            *.tar)       tar xf $1        ;;
            *.tbz2)      tar xjf $1      ;;
            *.tgz)       tar xzf $1       ;;
            *.zip)       unzip $1     ;;
            *.Z)         uncompress $1  ;;
            *.7z)        7z x $1    ;;
            *)           echo "я не в курсе как распаковать '$1'..." ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}
# упаковка в архив
pack () {
    if [ $1 ] ; then
        case $1 in
            tbz)       tar cjvf $2.tar.bz2 $2      ;;
            tgz)       tar czvf $2.tar.gz  $2       ;;
            tar)      tar cpvf $2.tar  $2       ;;
            bz2)    bzip $2 ;;
            gz)        gzip -c -9 -n $2 > $2.gz ;;
            zip)       zip -r $2.zip $2   ;;
            7z)        7z a $2.7z $2    ;;
            *)         echo "'$1' cannot be packed via pk()" ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}
# перенаправляем
READNULLCMD=${PAGER}
# цветной grep
alias grep='grep --color=auto'
alias df='df -h'
alias du='du -h'
alias ls='ls -F --color=auto'
alias ll="ls -lah"
alias man="LC_ALL="ru_RU.UTF-8" man"
# разукрашиваем некоторые команды с помощью grc
[[ -f /usr/bin/grc ]] && {
  alias ping="grc --colour=auto ping"
  alias traceroute="grc --colour=auto traceroute"
  alias make="grc --colour=auto make"
  alias diff="grc --colour=auto diff"
  alias cvs="grc --colour=auto cvs"
  alias netstat="grc --colour=auto netstat"
}
# разукрашиваем логи с помощью grc
alias logc="grc cat"
alias logt="grc tail"
alias logh="grc head"
alias -g  HE='2>>( sed -ue "s/.*/$fg_bold[red]&$reset_color/" 1>&2 )' # Highlight Errors
# Установка PROMT
#
# левый
# PROMPT="%{$fg_bold[yellow]%}G$%{$reset_color%}"
# правый - когда всё гуд хороший смайлик, когда ошибка то грусный, ну и цветные ясен фиг
# RPROMPT="%{$fg_bold[grey]%}%~/ %{$reset_color%}% %(?,%{$fg[green]%}:%)%{$reset_color%},%{$fg[red]%}:(%{$reset_color%}"
# вопрос на автокоррекцию
# SPROMPT='zsh: Заменить '\''%R'\'' на '\''%r'\'' ? [Yes/No/Abort/Edit] '
#
#
[[ ${TERM} =~ screen ]] && precmd() { print -Pn "\e]2;%2d\a" } || RPROMPT='%F{white}%~%f'
PS1='%B%F{cyan}%#%f%b '
PS2='  '
PS3='%B%F{white}?# %b%f%F{red}%# %f'
PS4='%B%F{white}%_ %b%f%F{magenta}%# %f%B%F{white}+%N:%i %b%f%F{magenta}%# %f' 

:~% echo $shell
/usr/bin/tcsh
:~% unset noclobber
:~% ls file
ls: cannot access file: No such file or directory
:~% set noclobber
:~% echo "something" >> file
file: No such file or directory.
:~% echo "something" > file
:~% echo "another something" > file
: File exists.
:~% echo "another something" >> file
:~% cat file
something
another something

:~$ echo $SHELL
/bin/bash
:~$ set -o noclobber    
:~$ echo "something" >> file
:~$ cat file
something
:~$ rm file
:~$ echo "something" > file
:~$ cat file
something
:~$ echo "another something" > file
bash: file: cannot overwrite existing file

$ echo $0
dash
$ set -o noclobber
$ ls file
ls: cannot access file: No such file or directory
$ echo "something" >> file           
$ cat file
something
$ rm file
$ echo "something" > file
$ cat file
something
$ echo "another something" > file
dash: 10: cannot create file: File exists

% echo $0                
zsh
% ls file
ls: cannot access file: No such file or directory
% set +o CLOBBER
% echo "something" > file
% echo "something" > file
zsh: file exists: file
% echo "another something" >> file
% cat file
something
another something
% rm file
% echo "something" >> file 
zsh: no such file or directory: file