在 bash 中是否有命名“私有函数”的约定？
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Is there a convention for naming 'private functions' in bash?
提问by yic
Is there a convention for naming private functions in bash? I have a bash module with some private functions, wondering if I should start their names with underscore. So far I haven't seen any convention.
在 bash 中是否有命名私有函数的约定？我有一个带有一些私有函数的 bash 模块，想知道我是否应该用下划线开头它们的名字。到目前为止，我还没有看到任何会议。
回答by John Kugelman
For what it's worth, Red Hat's /etc/init.d/functionsscript uses double underscores.
就其价值而言，Red Hat 的/etc/init.d/functions脚本使用双下划线。
# __umount_loop awk_program fstab_file first_msg retry_msg umount_args
# awk_program should process fstab_file and return a list of fstab-encoded
# paths; it doesn't have to handle comments in fstab_file.
__umount_loop() {
# ...
}
# Similar to __umount loop above, specialized for loopback devices
__umount_loopback_loop() {
# ...
}
# __proc_pids {program} [pidfile]
# Set $pid to pids from /var/run* for {program}. $pid should be declared
# local in the caller.
# Returns LSB exit code for the 'status' action.
__pids_var_run() {
# ...
}
# A sed expression to filter out the files that is_ignored_file recognizes
__sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d'
回答by DVK
I'm not aware of any formal bash-specific conventions, but starting private identifiers with underscore is a fairly widespread language-independent convention (I encountered it on anything from C to Perl to Java to shell scripts).
我不知道任何正式的特定于 bash 的约定，但以下划线开头的私有标识符是一个相当普遍的独立于语言的约定（我在从 C 到 Perl 到 Java 到 shell 脚本的任何东西上都遇到了它）。
