PS1 de .bashrc substituído em outro lugar

Question

PS1 de .bashrc substituído em outro lugar

#1 resposta do (2 votos)

1

Estou tentando usar uma linha personalizada do PS1, incluindo cores e informações do Git repo, em uma máquina Red Hat Enterprise Linux 6. Eu tenho uma versão predefinida que estou usando com sucesso em outros sistemas que executam o Ubuntu ou o Mint.

No meu .bashrc , adicionei a seguinte parte na parte inferior:

# Colors
Black='\e[0;30m'        # Black
Red='\e[0;31m'          # Red
...
NC="\e[m"               # Color Reset

# show git branch
parse_git_branch() {
  # git branch 2> /dev/null | sed -e '/^\[^*\]/d' -e 's/* \(.*\)/|/'
  git rev-parse --abbrev-ref HEAD 2> /dev/null | sed 's/^/|/g'
}
PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "

No entanto, ao abrir um terminal, ainda vejo a linha PS1 padrão. Um echo $PS1 imprime \[3]0;\u@\h: \w.bashrc7\]\u@\h:\w> . Aparentemente, essa variável é substituída em algum lugar. Mas onde, ou como posso descobrir isso?

A propósito, echo "hello" definitivamente é executado. Eu verifiquei isso adicionando uma linha como bash -x e vendo o resultado ao abrir um terminal.

Atualizar

A execução de grep -H PS1 ~/.bashrc ~/.profile ~/.bash_profile ~/bash.login ~/.bash_aliases /etc/bash.bashrc /etc/profile /etc/profile.d/* /etc/environment 2> /dev/null imprime muita saída, terminando com

+ On_White='\e[47m'
+ NC='\e[m'
+ PS1='\[\e[0;32m\]\u@\h \[\e[1;30m\]\w\[\e[0;33m\]$(parse_git_branch)\[\e[m\] $ '
++ PS1='\[3]0;\u@\h: \w/home/myself/.bashrc:# this does not apply, but PS1 env var is empty.
/home/myself/.bashrc:[ -n "$PS1" ] || INTERACTIVE=0
/home/myself/.bashrc:PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "
/etc/profile.d/company.sh:  linux:root) PS1="\u@\h:\w# "; TMOUT=3600 ;;
/etc/profile.d/company.sh:  linux:*)    PS1="\u@\h:\w> " ;;
/etc/profile.d/company.sh:  *:root)     PS1="\[3]0;\u@\h: \wPKG_ROOT=/opt/companyhome/

NFS_ROOT=/share/install/companyhome/current/

LINKS_VERSION=3.0.0.0

# write to stdout (disabled for non interactive (e.g. scp) logins)
print_msg() {
    if  [ "$INTERACTIVE" = "1" ]; then
        echo "$1"
    fi
}

print_msg_debug(){
    if [[ ! -z "$COMPANYHOME_INIT_DEBUG" ]]; then
        print_msg "$@"
    fi;
}

# check if this is an interactive session.
# tty results with 1 if not terminal. But with ansible remote execution,
# this does not apply, but PS1 env var is empty.
INTERACTIVE=1
tty -s || INTERACTIVE=0 
[ -n "$PS1" ] || INTERACTIVE=0


print_msg_debug "loading companyhome"

# define_companyhome_root
# check if we run against a packaged version or a nfs (legacy) version of companyhome 
CURRENT_ROOT=""
if [ -d "$PKG_ROOT" ]; then
    CURRENT_ROOT=$PKG_ROOT
elif [ -d "$NFS_ROOT" ]; then
    CURRENT_ROOT=$NFS_ROOT
else 
    print_msg "Error no companyhome installation found."
    print_msg "Companyhome could not be loaded."
    return 1
fi 

export "COMPANYHOME_ROOT=$CURRENT_ROOT"
print_msg_debug "companyhome is installed in \"$CURRENT_ROOT\""

# include companyhome
. "${COMPANYHOME_ROOT}/update/check_linksversion"
. "${COMPANYHOME_ROOT}/bashrc_company"

if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
fi



    # Normal Colors
Black='\e[0;30m'        # Black
Red='\e[0;31m'          # Red
Green='\e[0;32m'        # Green
Yellow='\e[0;33m'       # Yellow
Blue='\e[0;34m'         # Blue
Purple='\e[0;35m'       # Purple
Cyan='\e[0;36m'         # Cyan
LightGray='\e[0;37m'    # Light Gray

# Bold
BBlack='\e[1;30m'       # Black
BRed='\e[1;31m'         # Red
BGreen='\e[1;32m'       # Green
BYellow='\e[1;33m'      # Yellow
BBlue='\e[1;34m'        # Blue
BPurple='\e[1;35m'      # Purple
BCyan='\e[1;36m'        # Cyan
BWhite='\e[1;37m'       # White

# Background
On_Black='\e[40m'       # Black
On_Red='\e[41m'         # Red
On_Green='\e[42m'       # Green
On_Yellow='\e[43m'      # Yellow
On_Blue='\e[44m'        # Blue
On_Purple='\e[45m'      # Purple
On_Cyan='\e[46m'        # Cyan
On_White='\e[47m'       # White

NC="\e[m"               # Color Reset


# show git branch
parse_git_branch() {
  # git branch 2> /dev/null | sed -e '/^\[^*\]/d' -e 's/* \(.*\)/|/'
  git rev-parse --abbrev-ref HEAD 2> /dev/null | sed 's/^/|/g'
}
PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "
7\]\u@\h:\w# "; TMOUT=3600 ;;
/etc/profile.d/company.sh:  *)          PS1="\[3]0;\u@\h: \wINTERACTIVE=1
tty -s || INTERACTIVE=0 
[ -n "$PS1" ] || INTERACTIVE=0

# is_nfs_home returns 0 (success) if /home is nfs/network based, else 1 (local home)  
# the function does not guarantee the accessibility
is_nfs_home(){
    # if $HOME is an explicit mount -> nfs else its local
--
        export PS2='> '
    fi
}
sp () {
    setps2
    export PROMPT_COMMAND='PS1='echo "\u@\h$PS2"''
    export PS1
}
dp () {
    setps2
    if [ "$TERM" = "dtterm" ] || [ "$TERM" = "xterm" ] || [ "$TERM" = "xterm-color" ] || [ "$TERM" = "linux" ]; then
        export PROMPT_COMMAND='PS1="\[3]0;\u@\h: \w# Colors
Black='\e[0;30m'        # Black
Red='\e[0;31m'          # Red
...
NC="\e[m"               # Color Reset

# show git branch
parse_git_branch() {
  # git branch 2> /dev/null | sed -e '/^\[^*\]/d' -e 's/* \(.*\)/|/'
  git rev-parse --abbrev-ref HEAD 2> /dev/null | sed 's/^/|/g'
}
PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "
7\]\u@\h:\w$PS2"'
    elif [ "$TERM" = "sun-cmd" ] || [ ! -z $EMACS ] ; then
        export PROMPT_COMMAND='PS1='echo "\u@\h:\w$PS2"''
    else
        sp
    fi
    export PS1
}

dp
export ignoreeof=0
7\]\u@\h:\w> " ;;
/etc/profile.d/company.sh:export PS1
/etc/profile.d/colorls.sh:  [ -z "$PS1" ] && return
7\]\u@\h:\w> '

Atualização II

Saída de .bashrc :

+ On_White='\e[47m'
+ NC='\e[m'
+ PS1='\[\e[0;32m\]\u@\h \[\e[1;30m\]\w\[\e[0;33m\]$(parse_git_branch)\[\e[m\] $ '
++ PS1='\[3]0;\u@\h: \w/home/myself/.bashrc:# this does not apply, but PS1 env var is empty.
/home/myself/.bashrc:[ -n "$PS1" ] || INTERACTIVE=0
/home/myself/.bashrc:PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "
/etc/profile.d/company.sh:  linux:root) PS1="\u@\h:\w# "; TMOUT=3600 ;;
/etc/profile.d/company.sh:  linux:*)    PS1="\u@\h:\w> " ;;
/etc/profile.d/company.sh:  *:root)     PS1="\[3]0;\u@\h: \wPKG_ROOT=/opt/companyhome/

NFS_ROOT=/share/install/companyhome/current/

LINKS_VERSION=3.0.0.0

# write to stdout (disabled for non interactive (e.g. scp) logins)
print_msg() {
    if  [ "$INTERACTIVE" = "1" ]; then
        echo "$1"
    fi
}

print_msg_debug(){
    if [[ ! -z "$COMPANYHOME_INIT_DEBUG" ]]; then
        print_msg "$@"
    fi;
}

# check if this is an interactive session.
# tty results with 1 if not terminal. But with ansible remote execution,
# this does not apply, but PS1 env var is empty.
INTERACTIVE=1
tty -s || INTERACTIVE=0 
[ -n "$PS1" ] || INTERACTIVE=0


print_msg_debug "loading companyhome"

# define_companyhome_root
# check if we run against a packaged version or a nfs (legacy) version of companyhome 
CURRENT_ROOT=""
if [ -d "$PKG_ROOT" ]; then
    CURRENT_ROOT=$PKG_ROOT
elif [ -d "$NFS_ROOT" ]; then
    CURRENT_ROOT=$NFS_ROOT
else 
    print_msg "Error no companyhome installation found."
    print_msg "Companyhome could not be loaded."
    return 1
fi 

export "COMPANYHOME_ROOT=$CURRENT_ROOT"
print_msg_debug "companyhome is installed in \"$CURRENT_ROOT\""

# include companyhome
. "${COMPANYHOME_ROOT}/update/check_linksversion"
. "${COMPANYHOME_ROOT}/bashrc_company"

if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
fi



    # Normal Colors
Black='\e[0;30m'        # Black
Red='\e[0;31m'          # Red
Green='\e[0;32m'        # Green
Yellow='\e[0;33m'       # Yellow
Blue='\e[0;34m'         # Blue
Purple='\e[0;35m'       # Purple
Cyan='\e[0;36m'         # Cyan
LightGray='\e[0;37m'    # Light Gray

# Bold
BBlack='\e[1;30m'       # Black
BRed='\e[1;31m'         # Red
BGreen='\e[1;32m'       # Green
BYellow='\e[1;33m'      # Yellow
BBlue='\e[1;34m'        # Blue
BPurple='\e[1;35m'      # Purple
BCyan='\e[1;36m'        # Cyan
BWhite='\e[1;37m'       # White

# Background
On_Black='\e[40m'       # Black
On_Red='\e[41m'         # Red
On_Green='\e[42m'       # Green
On_Yellow='\e[43m'      # Yellow
On_Blue='\e[44m'        # Blue
On_Purple='\e[45m'      # Purple
On_Cyan='\e[46m'        # Cyan
On_White='\e[47m'       # White

NC="\e[m"               # Color Reset


# show git branch
parse_git_branch() {
  # git branch 2> /dev/null | sed -e '/^\[^*\]/d' -e 's/* \(.*\)/|/'
  git rev-parse --abbrev-ref HEAD 2> /dev/null | sed 's/^/|/g'
}
PS1="\[$Green\]\u@\h \[$BBlack\]\w\[$Yellow\]\$(parse_git_branch)\[$NC\] $ "
7\]\u@\h:\w# "; TMOUT=3600 ;;
/etc/profile.d/company.sh:  *)          PS1="\[3]0;\u@\h: \wINTERACTIVE=1
tty -s || INTERACTIVE=0 
[ -n "$PS1" ] || INTERACTIVE=0

# is_nfs_home returns 0 (success) if /home is nfs/network based, else 1 (local home)  
# the function does not guarantee the accessibility
is_nfs_home(){
    # if $HOME is an explicit mount -> nfs else its local
--
        export PS2='> '
    fi
}
sp () {
    setps2
    export PROMPT_COMMAND='PS1='echo "\u@\h$PS2"''
    export PS1
}
dp () {
    setps2
    if [ "$TERM" = "dtterm" ] || [ "$TERM" = "xterm" ] || [ "$TERM" = "xterm-color" ] || [ "$TERM" = "linux" ]; then
        export PROMPT_COMMAND='PS1="\[3]0;\u@\h: \w%pre%7\]\u@\h:\w$PS2"'
    elif [ "$TERM" = "sun-cmd" ] || [ ! -z $EMACS ] ; then
        export PROMPT_COMMAND='PS1='echo "\u@\h:\w$PS2"''
    else
        sp
    fi
    export PS1
}

dp
export ignoreeof=0
7\]\u@\h:\w> " ;;
/etc/profile.d/company.sh:export PS1
/etc/profile.d/colorls.sh:  [ -z "$PS1" ] && return
7\]\u@\h:\w> '

Atualização III

Meu total ${COMPANYHOME_ROOT}/bashrc_company :

%pre%

%code% :

%pre%

command-line bash bashrc

por Cedric Reichenbach 17.09.2015 / 14:47

1 resposta

Tags command-line bash bashrc

Cria um arquivo com formatação específica a partir do conteúdo do diretório Quebrando um contêiner docker

score 2 · Accepted Answer

O problema é esta linha no seu arquivo ${COMPANYHOME_ROOT}/bashrc_company :

export PROMPT_COMMAND='PS1='echo "\u@\h$PS2"''

A variável PROMPT_COMMAND define um comando que deve ser executado antes que um prompt seja exibido. No seu caso, isso foi configurado para definir PS1. Assim, cada vez que um prompt é mostrado, seu PS1 está sendo redefinido para o valor padrão.

Eu não tenho idéia de por que alguém iria querer fazer isso, mas é simples o suficiente para corrigir. Exclua essa linha de ${COMPANYHOME_ROOT}/bashrc_company ou defina PROMPT_COMMAND para outra coisa em ~/.bashrc :

PROMPT_COMMAND=""