New ScriptsTwo PatternsConsecutive Lines
Mail IssuesLines Containing PAT and Adjacent Ones.N-th Line Containing PAT
First Line Containing PATLast Line Containing PATAppend/Join Conditionally
Reformat a FileTwo-file IssuesMisc
New Scripts
  1. Edit the second file according the words and replacements specified in the first one. 2010.05.31
Two Patterns
  1. Get lines containing PAT1 AND PAT2 of a file. 2000.11.16
  2. Get lines containing PAT1 OR PAT2 of a file. 2000.11.17
  3. Get lines containing PAT1 but no PAT2 of a file. 2000.09.29
  4. Insert a separating line after a line beginning with 'abc' and immediately followed by a line beginning with 'xyz'. 2005.07.29
  5. Perform operations on lines starting from the fist line containing PAT1 till the last one containing PAT2. 2008.01.24
Consecutive Lines
  1. Delete two consecutive lines if the first one contains PAT11, and the second one contains PAT2. 2007.12.31
  2. Remove almost identical lines. 2008.01.21
  3. For consecutive `almost identical' lines, print only the first one. 2008.11.28
  4. Remove consecutive duplicate lines. 2008.02.21
  5. Retrieve the first line among consecutive lines of the same key. 2008.08.25
Mail Issues
  1. Extract 'Received:' headers from a mailbox. 2004.05.16
  2. Add a separator after each header field of a mail. 2009.08.06
  3. Extract matched headers of a mail. 2009.12.25
  4. Gather information of a mail transaction. 2010.01.26
Lines Containing PAT and Adjacent Ones.
  1. Get every line containing PAT and the adjacent one preceding it. 2008.02.09
  2. Get every line containing PAT, the preceding, and the following ones. 2009.03.31
  3. Get lines containing PAT and 3 consecutive lines following each of them. 2000.11.15
  4. Get every line which is adjacent to and precedes a line containing PAT. 2001.02.13
  5. Get the line following a line containing PAT. 2004.02.17
  6. Delete every line containing PAT and the next three lines. 2009.07.30
N-th Line Containing PAT
  1. Get the N-th matched line. 2007.08.23
  2. Get the N-th matched line.(another version) 2007.09.03
  3. Get the N1-th, N2-th, N3-th, ..., matched lines. 2010.04.30
First Line Containing PAT
  1. Get the FIRST line containing PAT 2000.09.29
  2. Delete the FIRST line containing PAT of a file. 2000.09.29
  3. Get lines starting from the FIRST one containing PAT till the end of file. 2000.10.18
  4. Delete up to, but not including, the first line containing PAT. 2001.02.17
Last Line Containing PAT
  1. Get the LAST line containing PAT of a file. 2000.10.04
  2. Delete the LAST line containing PAT of a file. 2008.08.06

  3. Among lines containing PAT, delete all but the last one of them. 2009.07.28

  4. Get the lines from the LAST one containing PAT of a file. 2006.06.22
  5. Get the lines after the LAST one containing PAT of a file. 2006.06.28
  6. Delete the lines from the LAST line containing PAT till the end of file. 2006.07.19

  7. Delete the lines till the LAST one containing PAT. 2007.09.05

  8. Perform a specific operation on lines starting from the beginning of a file till the LAST line containing PAT. 2007.01.18

  9. Among lines with the same key, print the last one. 2009.08.03
Append/Join Conditionally
  1. If a line does not end with a dot ('.'), join every following line till one ending with a dot. 2001.02.26
  2. A case study on joining lines. 2004.09.29
  3. Join every three non-blank lines to one line, separate them by '|'s. 2004.02.12
  4. Append a line to the previous one if it does not begin with some tag. 2006.09.13
  5. Join together all lines except the last one. 2008.08.12
  6. Prepend a block to a file if it does not exist. 2009.07.14
Reformat a File
  1. Split lines that are longer than 25 characters. 2001.06.22
  2. Move lines containing some string to the end of a file. 2002.12.04
  3. Fix newlines at wrong positions. 2004.03.04
  4. Add a separator line to the end of every 'block'. 2002.10.04
  5. Append a message after very 'block'. 2004.09.10
  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
  7. Show complete records only. 2007.06.12
  8. Substitute the section specified in File1 for the same section in File2. 2008.08.18
Two-file Issues
  1. List records of File2 whose keys are not listed in File1. 2008.08.29
  2. Update entries of File2 according to File1. 2009.05.29
  3. Edit the second file according the words and replacements specified in the first one. 2010.05.31
Misc
  1. Get the longest line of a file. 2000.10.11
  2. Retrieve IPs and interface names from the output of /sbin/ifconfig. 2003.02.21
  3. Comment out uncommented lines. 2004.02.27
  4. Prepend the contents of some file before every matching line of a file. 2005.10.18
  5. Print the last line of each group consisting of lines with the same tag. 2003.01.28
  6. Replace every instance of 'KEY=....' of a file with the first one. 2004.06.08
  7. Print `ODD' if there are odd number of lines containing PAT in the datafile. 2008.06.23
  8. Convert a file listing to FTP commands. 2008.12.23
  9. Reformat a datafile. 2009.03.04
  10. Delete shell-style comment lines and empty ones. 2009.03.26
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