使用Jenkins執行shell腳本的時候, 碰到command not found. 比如java mvn, 這些環境變量配置在/etc/profile
中, 但jenkins執行的時候並沒有加載.
這是因為jenkins執行的shell是非登錄交互式shell, 並不會加載/etc/profile.
交互式shell會加載.bashrc, 進而會加載/etc/bashrc, 而/etc/bashrc會加載/etc/profile.d/*.sh.
因此, 自定義的變量應該定義在/etc/profile.d/*.sh
1.登錄shell
所謂登錄shell,指的是當用戶登錄系統時所取的那個shell，登錄shell屬於交互式shell。
登錄shell將查找4個不同的啟動文件來處理其中的命令。 bash shell處理文件的順序如下：
1:/etc/profile
2:/etc/profile.d等待配置文件
3:$HOME/.bash_profile 會加載$HOME/.bashrc和/etc/bashrc
4:$HOME/.bash_login
5:$HOME/.profile
2. 交互式非登錄shell
如果啟動了一個bash shell而沒有登入系統（如在CLI提示符中鍵入bash）,
則啟動了一個交互式非登錄shell.
$HOME/.bashrc
交互式非登錄shell執行~/.bashrc文件中的命令.在每次執行shell腳本時，都會重新讀取這個文件，所以是最完整的。
但是萬事都不是一樣的，debain系列的是不同的，如ubuntu
/etc/profile-->/etc/environment-->$HOME/.profile.要配置java等變量時，都/etc/environment中
.bashrc
# .bashrc
# User specific aliases and functions
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
登錄shell的初始化文件(比如.bash_profile)通常會運行這個文件。這樣，登錄shell和非登錄shell都可以使用.bashrc中的命令。
/etc/bashrc
[root@localhost ~]# cat /etc/bashrc
# /etc/bashrc
# System wide functions and aliases
# Environment stuff goes in /etc/profile
# It's NOT a good idea to change this file unless you know what you
# are doing. It's much better to create a custom.sh shell script in
# /etc/profile.d/ to make custom changes to your environment, as this
# will prevent the need for merging in future updates.
# are we an interactive shell?
if [ "$PS1" ]; then
if [ -z "$PROMPT_COMMAND" ]; then
case $TERM in
xterm*|vte*)
if [ -e /etc/sysconfig/bash-prompt-xterm ]; then
PROMPT_COMMAND=/etc/sysconfig/bash-prompt-xterm
elif [ "${VTE_VERSION:-0}" -ge 3405 ]; then
PROMPT_COMMAND="__vte_prompt_command"
else
PROMPT_COMMAND='printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"'
fi
;;
screen*)
if [ -e /etc/sysconfig/bash-prompt-screen ]; then
PROMPT_COMMAND=/etc/sysconfig/bash-prompt-screen
else
PROMPT_COMMAND='printf "\033k%s@%s:%s\033\\" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"'
fi
;;
*)
[ -e /etc/sysconfig/bash-prompt-default ] && PROMPT_COMMAND=/etc/sysconfig/bash-prompt-default
;;
esac
fi
# Turn on parallel history
shopt -s histappend
history -a
# Turn on checkwinsize
shopt -s checkwinsize
[ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ "
# You might want to have e.g. tty in prompt (e.g. more virtual machines)
# and console windows
# If you want to do so, just add e.g.
# if [ "$PS1" ]; then
# PS1="[\u@\h:\l \W]\\$ "
# fi
# to your custom modification shell script in /etc/profile.d/ directory
fi
if ! shopt -q login_shell ; then # We're not a login shell
# Need to redefine pathmunge, it get's undefined at the end of /etc/profile
pathmunge () {
case ":${PATH}:" in
*:"$1":*)
;;
*)
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
esac
}
# By default, we want umask to get set. This sets it for non-login shell.
# Current threshold for system reserved uid/gids is 200
# You could check uidgid reservation validity in
# /usr/share/doc/setup-*/uidgid file
if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ]; then
umask 002
else
umask 022
fi
SHELL=/bin/bash
# Only display echos from profile.d scripts if we are no login shell
# and interactive - otherwise just process them to set envvars
for i in /etc/profile.d/*.sh; do
if [ -r "$i" ]; then
if [ "$PS1" ]; then
. "$i"
else
. "$i" >/dev/null
fi
fi
done
unset i
unset -f pathmunge
fi
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