LinuxQuestions.org - grep question

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- - grep question (https://www.linuxquestions.org/questions/linux-newbie-8/grep-question-662012/)

I have a large text file that has the following information in it. This is just a snippet of it:

Code:

3|9|JF HEN||

4|9|J COATSWORTH||

7|3|JF CHO #88|#88|

11|3|JF CHO #41|#41|

23|4|JF CHO #11|#11|

32|5|J 001.96 SCH||

44|2|J 170 P KAL||

46|9|1978 CALDECOTT AWARD||

46|10|J 222 SPI||

64|5|J 551.6 PRI||

79|6|EJ SCH||

86|6|342 BIL||

88|5|J 342.73 MAE||

102|4|EJ WIL||

109|3|J 617.7 ALE||

117|6|EJ BRO||

118|5|J 363.7 FIF||

122|4|973.3 LOE||

129|4|J 385.097 FRA||

132|8|J 391 ROW||

137|5|J 641.09 PEN||

143|7|EJ GEO||

150|10|J 394.2649 GIB||

157|3|J 398 PER||

170|8|J 398.2 BRE||

171|11|BB BRE||

171|12|EJ BRE||

I want to do the following things:
1. edit out the double pipe " || " only at the end of the line and redirect that info to a new file.

2. Edit out any text only at the end of the line that is between a double pipe (example |#11| )and redirect that to a new file.

Quote:

edit out the double pipe " || " only at the end of the line and redirect that info to a new file.

redirect what info to the new file??

What reference do you use for scripting? I strongly recommend "Bash Guide for Beginners"---free at http://tldp.org

To redirect something to a file, simply put this at the end of the command string: "> newfilename"

There are several ways to grab a specific string, eg:
grep -o string filename ##prints every occurrence of "string"

To get only the text inside the last set of "|"s:
sed -n 's/.*|$.*$|$/\1/p' filename
(Actually, this syntax yields what is inside the last pair of "|"s at the end of the line.) To match something not at the end of the line, some more tweaks are required.