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Can we give multiple patterns to a sed command???

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Top Forums Shell Programming and Scripting Can we give multiple patterns to a sed command???
# 1  
Old 03-23-2007
Can we give multiple patterns to a sed command???
HI,

I want to know can multiple pattern be given inside a sed statement..

Input:

Code:
aa_bb_cc.Mar-22-2007
cc_dd_ee.Mar-21-2007
aa_1002985_952.xml
aa_bb_032207.txt
aa_bb_cc_10002878.dat

Output:

Code:
aa_bb_cc
cc_dd_ee
aa.xml
aa_bb.txt
aa_bb_cc.dat

I got this command from Ghostdog
Code:
sed 's/_[0-9]\{1,\}//g' file > newfile

which removes the numerals following _

Is there a way to specify another pattern within the same above said sed command to remove Mar-22-2007 to get the output as mentioned above....

Thanks for you help,
Kumar.
Last edited by rbatte1; 01-13-2017 at 07:33 AM.. Reason: Added CODE tags
# 2  
Old 03-23-2007
Code:
sed 's/_[0-9]\{1,\}//g;s/\..*-[0-9]\{1,\}$//' file

# 3  
Old 03-23-2007
Give a try on this...

Quote:
sed -e 's/[_[0-9]\{1,\}]//g' -e 's/\.[A-Za-z]\{3\}-[0-3][0-9]-[0-9]\{4\}//' filename
# 4  
Old 03-23-2007
Quote:
Originally Posted by anbu23
Code:
sed 's/_[0-9]\{1,\}//g;s/\..*-[0-9]\{1,\}$//' file

Hi Anbu,

i'm sorry,i specified the wrong input..

Input:

Code:
aa.bb_cc.Mar-22-2007
aa.dd_ee.Mar-21-2007
aa.bb_cc_ee.Mar-22-2007
aa_1002985_952.xml
aa_bb_032207.txt
aa_bb_cc_10002878.dat

Output:

Code:
aa.bb_cc
aa.dd_ee
aa.bb_cc_ee
aa.xml
aa_bb.txt
aa_bb_cc.dat

can you please give me a modified sed command...

Jacoden,

I did try out your command but it is giving the same input file as output...its not filtering out anything...

Thanks for you help guys,
Kumar.
Last edited by rbatte1; 01-13-2017 at 07:33 AM.. Reason: Added CODE tags
# 5  
Old 03-23-2007
Quote:
Originally Posted by kumarsaravana_s
Hi Anbu,

i'm sorry,i specified the wrong input..

Input:

Code:
aa.bb_cc.Mar-22-2007
aa.dd_ee.Mar-21-2007
aa.bb_cc_ee.Mar-22-2007
aa_1002985_952.xml
aa_bb_032207.txt
aa_bb_cc_10002878.dat

Output:

Code:
aa.bb_cc
aa.dd_ee
aa.bb_cc_ee
aa.xml
aa_bb.txt
aa_bb_cc.dat

can you please give me a modified sed command...

Jacoden,

I did try out your command but it is giving the same input file as output...its not filtering out anything...

Thanks for you help guys,
Kumar.
Code:
sed 's/_[0-9]\{1,\}//g;s/\.[a-zA-Z]\{3\}-[0-9]\{2\}-[0-9]\{4\}$//' file

Last edited by rbatte1; 01-13-2017 at 07:34 AM.. Reason: Retro-added CODE tags in quote
# 6  
Old 03-23-2007
Quote:
Originally Posted by anbu23
Code:
sed 's/_[0-9]\{1,\}//g;s/\.[a-zA-Z]\{3\}-[0-9]\{2\}-[0-9]\{4\}$//' file


Thanks a lot Anbu....It is working perfectly fine...Can you please explain me the second pattern...

Thanks and Regards,
Kumar
# 7  
Old 03-23-2007
Quote:
Originally Posted by kumarsaravana_s
Thanks a lot Anbu....It is working perfectly fine...Can you please explain me the second pattern...

Thanks and Regards,
Kumar
Code:
s/\.[a-zA-Z]\{3\}-[0-9]\{2\}-[0-9]\{4\}$//

. is a regular expression character which matches any single character except NUL.But we want to match dot in the input so we used \ to turn off the special meaning of the dot.

[a-zA-Z]\{3\}- matches three alphabetic character followed by hypen

[0-9]\{2\}- matches two digits followed by hypen

[0-9]\{4\} matches four digits

$ match the preceding regular expression at the end of the line

s/\.[a-zA-Z]\{3\}-[0-9]\{2\}-[0-9]\{4\}$// removes the string matching this regular expression at the end of line
Last edited by rbatte1; 01-13-2017 at 07:36 AM.. Reason: Added ICODE tags and removed colour for clarity of code
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