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这是此脚本的背景：

一两年前，我尝试通过混合 Bash 脚本和get-iplayer程序来自动下载 Dr Who。这既是一个脚本练习，又是想看神秘博士。我从来没有让 iPlayer 工作过，而且我get-iplayer每次都太健忘而无法运行。

这是代码：

#!/bin/bash
#Export programme names; make sure PROG is a search term that only brings up the shows you want
export PROG="Doctor Who"
export SHORT="Dr"

#Get the info you want into some text files, named after the SHORT keyword
(ls /home/$USER/Videos/iPlayer/"$PROG" | grep Doctor) >/home/$USER/Videos/iPlayer/.Code/"$SHORT"Hist.tmp
get_iplayer --listformat="<pid>: <name> - <episode>" --search="$PROG:" >/home/$USER/Videos/iPlayer/.Code/"$SHORT"Curr.tmp 

#Tidy the first file to get rid of underscores 
#then egrep to suck out the pid...schluuurp

sed -i 's/_/ /g' ./"$SHORT"Hist.tmp
#replace the underscores in the file name with spaces
egrep  -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./"$SHORT"Hist.tmp >./"$SHORT"Hist.txt
rm ./"$SHORT"Hist.tmp
egrep  -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./"$SHORT"Curr.tmp >./"$SHORT"Curr.txt
rm ./"$SHORT"Curr.tmp
#'b[0-9a-z]{7}' is the regex for the pid 
#--I've edited this as the pid regex no longer matches the above

sort ./"$SHORT"Curr.txt -o ./"$SHORT"Curr.txt
sort ./"$SHORT"Hist.txt -o ./"$SHORT"Hist.txt
#get things in order

diff ./"$SHORT"Curr.txt ./"$SHORT"Hist.txt > ./"$SHORT"Diff.txt
rm ./"$SHORT"Curr.txt ./"$SHORT"Hist.txt
sed -i 's/[^ ]* //1' ./"$SHORT"Diff.txt 
sed -i '1d' ./"$SHORT"Diff.txt
sed -i 's/---/\n/g'./"$SHORT"Diff.txt #<---this doesn't work?
sed '/^$/q' 

#get-iplayer --listformat="<index>" --field=pid $(cat "$SHORT"Diff.txt |  tr '\n' ' ') >./"$SHORT"Diff.txt
#sed -i '1,6d' ./"$SHORT"Diff.txt

#sed -i '/^$/,$ d' ./"$SHORT"Diff.txt

#get-iplayer --get $(cat "$SHORT"Diff.txt |  tr '\n' ' ') --output="/home/$LOGNAME/Videos/iPlayer/$PROG" --force

现在，如果这行得通，我就不会在这里发帖了。有几个问题：

  • 我指出的 sed 行sed -i 's/---/\n/g'./"$SHORT"Diff.txt给了我这个错误
    sed: -e expression #1, char 11: unknown option to s'`
  • 该diff程序似乎没有挑选出当前的pid我不知道自从它以前工作以来发生了什么变化。

有人能帮我修复这个脚本吗？

编辑

按要求 uname; sed --version 生产 Linux GNU sed version 4.2.1

并set -x输入：

+ export 'PROG=Doctor Who'
+ PROG='Doctor Who'
+ export SHORT=Dr
+ SHORT=Dr
+ ls '/home/craig/Videos/iPlayer/Doctor Who'
+ grep Doctor
+ get_iplayer '--listformat=<pid>: <name> - <episode>' '--search=Doctor Who:'

+ sed -i 's/_/ /g' ./DrHist.tmp
+ egrep -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./DrHist.tmp
+ rm ./DrHist.tmp
+ egrep -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./DrCurr.tmp
+ rm ./DrCurr.tmp
+ sort ./DrCurr.txt -o ./DrCurr.txt
+ sort ./DrHist.txt -o ./DrHist.txt
+ diff ./DrCurr.txt ./DrHist.txt
+ rm ./DrCurr.txt ./DrHist.txt
+ sed -i 's/[^ ]* //1' ./DrDiff.txt
+ sed -i 1d ./DrDiff.txt
+ sed -i 's/---/\n/g./DrDiff.txt'
sed: -e expression #1, char 11: unknown option to `s'
+ sed '/^$/q'

和输出：

p00wqr1 <--one file


b00sj9q <--the contents of the other file.
b00sj9s
b010tb7
b010y5l
b0110g4
b011884
b011fnd
b011lqw

的输入diff是输出的第一行和开始的行b0...。为什么它以前工作时不起作用？

4

1 回答 1

1

回答我自己的问题：

你的差异是错误的方式。所以它没有找到正确的 PID 集。这是工作代码：

#!/bin/bash
#Export programme names; make sure PROG is a search term that only brings up the shows you want
#set -x

export PROG="Doctor Who"
export SHORT="Dr"

#Get the info you want into some text files, named after the SHORT keyword
(ls /home/$USER/Videos/iPlayer/"$PROG" | grep "$PROG") >/home/$USER/Videos/iPlayer/.Code/"$SHORT"Hist.tmp
get_iplayer --listformat="<pid>: <name> - <episode>" --search="$PROG:" >/home/$USER/Videos/iPlayer/.Code/"$SHORT"Curr.tmp 

#Tidy the first file to get rid of underscores 
#then egrep to suck out the pid...schluuurp

sed -i 's/_/ /g' ./"$SHORT"Hist.tmp
#replace the underscores in the file name with spaces
egrep  -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./"$SHORT"Hist.tmp >./"$SHORT"Hist.txt
rm ./"$SHORT"Hist.tmp
egrep  -o '[bp]{1}[0-9]{2}[0-9a-z]{4}' ./"$SHORT"Curr.tmp >./"$SHORT"Curr.txt
rm ./"$SHORT"Curr.tmp
#'b[0-9a-z]{7}' is the regex for the pid 
#--I've edited this as the pid regex no longer matches the above

sort ./"$SHORT"Curr.txt -o ./"$SHORT"Curr.txt
sort ./"$SHORT"Hist.txt -o ./"$SHORT"Hist.txt
#get things in order

diff ./"$SHORT"Hist.txt ./"$SHORT"Curr.txt > ./"$SHORT"Diff.txt
rm ./"$SHORT"Curr.txt ./"$SHORT"Hist.txt
sed -i 's/[^ ]* //1' ./"$SHORT"Diff.txt 
sed -i '1d' ./"$SHORT"Diff.txt
sed -i 's/---/\n/g' ./"$SHORT"Diff.txt
sed '/^$/q' #<---magic?

#get the <index> from the PID
get-iplayer --listformat="<index>" --field=pid $(cat "$SHORT"Diff.txt |  tr '\n' ' ') >./"$SHORT"Diff.txt
#Sed is a magical beast
sed -i '1,6d' ./"$SHORT"Diff.txt
sed -i '/^$/,$ d' ./"$SHORT"Diff.txt
#Run get-iplayer over for each of the PIDs found, putting them in a video folder
get-iplayer --get $(cat "$SHORT"Diff.txt |  tr '\n' ' ') --output="/home/$LOGNAME/Videos/iPlayer/$PROG" --force
于 2012-09-04T21:32:33.527 回答