bash - 如何在 bash 脚本中标记邮件？

Question

我有一个名为extract-pdf-attachments.sh的 bash 脚本，它会自动保存一个电子邮件附件 (pdf) 以与 qmail 和重组文件进行映射。请参阅：问题 58188368 Stackoverflow

脚本效果很好。

现在我还想用这个脚本中的 pdf 标记每条消息。想过这样做'sed 's/\(^Subject:\).*/\1 [Settled]/' "$mailmessage"?'

我似乎没有让它工作，所以我的问题是如何在脚本中使用 pdf 更改消息的主题。我可以使用以下内容：sed 's/\(^Subject:\)/\1 [Settled]/' "$mailmessage"

见第 58 行sed 's/\(^Subject:\)/\1 [Settled]/' "$mailmessage"

这似乎不起作用。

bash 脚本：（参见与上面相同的链接）

#!/usr/bin/env bash

# This script process mail message attachments from stdin MIME message
# Extract all PDF files attachments
# and return the MIME message to stdout for further processing

# Ensure all locale settings are set to C, to prevent
# reformime from failing MIME headers decode with
# [unknown character set: ANSI_X3.4-1968]
# See: https://bugs.gentoo.org/304093
export LC_ALL=C LANG=C LANGUAGE=C

# Setting the destination path for saved attachments
attachements='/home/users/name/home'

trap 'rm -f -- "$mailmessage"' EXIT # Purge temporary mail message

# Create a temporary message file
mailmessage="$(mktemp)"

# Save stdin message to tempfile
cat > "$mailmessage"

# Iterate all MIME sections from the message
while read -r mime_section; do

  # Get all section info headers
  section_info="$(reformime -s "$mime_section" -i <"$mailmessage")"

  # Parse the Content-Type header
  content_type="$(grep 'content-type' <<<"$section_info" | cut -d ' ' -f 2-)"

  # Parse the Content-Name header (if available)
  content_name="$(grep 'content-name' <<<"$section_info" | cut -d ' ' -f 2-)"

  # Decode the value of the Content-Name header
  content_name="$(reformime -c UTF-8 -h "$content_name")"

  if [[ $content_type = "application/pdf" || $content_name =~ .*\.[pP][dD][fF] ]]; then
    # Attachment is a PDF
    if [ -z "$content_name" ]; then
      # The attachment has no name, so create a random name
      content_name="$(mktemp --dry-run unnamed_XXXXXXXX.pdf)"
    fi
    # Prepend the date to the attachment filename
    filename="$(date +%Y%m%d)_$content_name"

    # Save the attachment to a file
    reformime -s "$mime_section" -e <"$mailmessage" >"$attachements/$filename"

    # Prepend the text settled to the mail subject
    sed 's/\(^Subject:\)/\1 [Afgehandeld]/' "$mailmessage"

  fi

done < <(reformime < "$mailmessage") # reformime list all mime sections

cat <"$mailmessage" # Re-inject the message to stdout for further processing

标签： bashsedstdin