| New Scripts
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| 1
| Determine which desired items do not exist in a given file.
2011.09.23
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| Two Patterns
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| 1
| Get lines containing PAT1 AND PAT2 of a file.
2000.11.16
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| 2
| Get lines containing PAT1 OR PAT2 of a file.
2000.11.17
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| 3
| Get lines containing PAT1 but no PAT2 of a file.
2000.09.29
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| 4
| Insert a separating line after a line beginning with 'abc' and immediately followed by a line beginning with 'xyz'.
2005.07.29
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| 5
| Perform operations on lines starting from the fist line containing PAT1 till the last one containing PAT2.
2008.01.24
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| Consecutive Lines
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| 1
| Delete two consecutive lines if the first one contains PAT11, and the second one contains PAT2.
2007.12.31
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| 2
| Remove almost identical lines.
2008.01.21
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| 3
| For consecutive `almost identical' lines, print only the first one.
2008.11.28
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| 4
| Remove consecutive duplicate lines.
2008.02.21
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| 5
| Retrieve the first line among consecutive lines of the same key.
2008.08.25
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| Mail Issues
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| 1
| Extract 'Received:' headers from a mailbox.
2004.05.16
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| 2
| Add a separator after each header field of a mail.
2009.08.06
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| 3
| Extract matched headers of a mail.
2009.12.25
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| 4
| Gather information of a mail transaction.
2010.01.26
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| 5
| Find qualified letters in a `mailq' output.
2010.12.24
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| Lines Containing PAT and Adjacent Ones.
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| 1
| Get every line containing PAT and the adjacent one preceding it.
2008.02.09
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| 2
| Get every line containing PAT, the preceding, and the following ones.
2009.03.31
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| 3
| Get lines containing PAT and 3 consecutive lines following each of them.
2000.11.15
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| 4
| Get every line which is adjacent to and precedes a line containing PAT.
2001.02.13
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| 5
| Get the line following a line containing PAT.
2004.02.17
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| 6
| Delete every line containing PAT and the next three lines.
2009.07.30
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| N-th Line Containing PAT
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| 1
| Get the N-th matched line.
2007.08.23
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| 2
| Get the N-th matched line.(another version)
2007.09.03
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| 3
| Get the N1-th, N2-th, N3-th, ..., matched lines.
2010.04.30
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| 4
| Delete the N1-th, N2-th, N3-th, ..., matched lines.
2010.12.27
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| First Line Containing PAT
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| 1
| Get the FIRST line containing PAT
2000.09.29
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| 2
| Get lines starting from the FIRST one containing PAT till the end of file.
2000.10.18
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| 3
| Delete the FIRST line containing PAT of a file.
2000.09.29
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| 4
| Delete up to, but not including, the first line containing PAT.
2001.02.17
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| Last Line Containing PAT
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| 1
| Get the LAST line containing PAT of a file.
2000.10.04
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| 2
| Get the lines from the LAST one containing PAT of a file.
2006.06.22
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| 3
| Get the lines after the LAST one containing PAT of a file.
2006.06.28
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| 4
| Delete the LAST line containing PAT of a file.
2008.08.06
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| 5
| Delete the lines from the LAST line containing PAT till the end of file.
2006.07.19
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| 6
| Among lines containing PAT, delete all but the last one of them.
2009.07.28
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| 7
| Delete the lines till the LAST one containing PAT.
2007.09.05
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| 8
| Perform a specific operation on lines starting from the beginning of a file till the LAST line containing PAT.
2007.01.18
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| 9
| Among lines with the same key, print the last one.
2009.08.03
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| Lines containing N occurrences of PAT
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| 1
| Get lines containing exactly N occurrences of PAT.
2011.02.01
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| Append/Join Conditionally
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| 1
| If a line does not end with a dot ('.'), join every following line till one ending with a dot.
2001.02.26
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| 2
| A case study on joining lines.
2004.09.29
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| 3
| Join every three non-blank lines to one line, separate them by '|'s.
2004.02.12
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| 4
| Append a line to the previous one if it does not begin with some tag.
2006.09.13
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| 5
| Join together all lines except the last one.
2008.08.12
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| 6
| Prepend a block to a file if it does not exist.
2009.07.14
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| Reformat a File
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| 1
| Split lines that are longer than 25 characters.
2001.06.22
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| 2
| Move lines containing some string to the end of a file.
2002.12.04
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| 3
| Fix newlines at wrong positions.
2004.03.04
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| 4
| Add a separator line to the end of every 'block'.
2002.10.04
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| 5
| Append a message after very 'block'.
2004.09.10
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| 6
| If a non-blank line is not followed by a blank line, append a <br> tag to the end of it.
2006.05.22
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| 7
| Show complete records only.
2007.06.12
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| 8
| Substitute the section specified in File1 for the same section in File2.
2008.08.18
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| Two-file Issues
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| 1
| List records of File2 whose keys are not listed in File1.
2008.08.29
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| 2
| Update entries of File2 according to File1.
2009.05.29
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| 3
| Edit the second file according the words and replacements specified in the first one.
2010.05.31
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| Misc
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| 1
| Get the longest line of a file.
2000.10.11
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| 2
| Retrieve IPs and interface names from the output of /sbin/ifconfig.
2003.02.21
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| 3
| Comment out uncommented lines.
2004.02.27
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| 4
| Prepend the contents of some file before every matching line of a file.
2005.10.18
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| 5
| Print the last line of each group consisting of lines with the same tag.
2003.01.28
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| 6
| Replace every instance of 'KEY=....' of a file with the first one.
2004.06.08
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| 7
| Print `ODD' if there are odd number of lines containing PAT in the datafile.
2008.06.23
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| 8
| Convert a file listing to FTP commands.
2008.12.23
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| 9
| Reformat a datafile.
2009.03.04
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| 10
| Delete shell-style comment lines and empty ones.
2009.03.26
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| 11
| Determine which desired items do not exist in a given file.
2011.09.23
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