Sponsored Content
Top Forums Shell Programming and Scripting print lines AFTER lines cointaining a regexp (or print every first and fourth line) Post 302435233 by kmkocot on Tuesday 6th of July 2010 09:34:25 PM
Old 07-06-2010
print lines AFTER lines cointaining a regexp (or print every first and fourth line)

Hi all,

This should be very easy but I can't figure it out...

I have a file that looks like this:
Code:
@SRR057408.1 FW8Y5CK02R652T length=34
AGCAGTGGTATCAACGCAGAGTAAGCAGTGGTAT
+SRR057408.1 FW8Y5CK02R652T length=34
FIIHFF6666?=:88@@@BBD:::?@ABBAAA>8
@SRR057408.2 FW8Y5CK02TBMHV length=52
CGTTGATACCACTGCTTACTCTGCGTTGATACCACTGCTTACTCTGCGTTGA
+SRR057408.2 FW8Y5CK02TBMHV length=52
FIIIIIFEDFCCEF<<<EFFFFGGGFFFFA:::AA@A<0004<889<422=7
@SRR057408.3 FW8Y5CK02R8Z08 length=72
CTCTGCGTTGATACCACTGCTTACTTCTGCGTTGATACCACTGCTTAACTCTGCGTTGGATACACTGCTTAC
+SRR057408.3 FW8Y5CK02R8Z08 length=72
FIIIIIIIIIIFFFFFDDFA:::D998@A??<844432125774----/158::85522443433=::91//
@SRR057408.4 FW8Y5CK02R76ED length=49
ATACCACTGCTTACTCTGCGTTGATACCACTGCTTACTCTGCGTTGATA
+SRR057408.4 FW8Y5CK02R76ED length=49
FIIIIIIIII@@@HIIIHFFFFHHFFFFFFFDDBBBBA=89444484//

I want to print every first and fourth line so that the output looks like this:
Code:
@SRR057408.1 FW8Y5CK02R652T length=34
FIIHFF6666?=:88@@@BBD:::?@ABBAAA>8
@SRR057408.2 FW8Y5CK02TBMHV length=52
FIIIIIFEDFCCEF<<<EFFFFGGGFFFFA:::AA@A<0004<889<422=7
@SRR057408.3 FW8Y5CK02R8Z08 length=72
FIIIIIIIIIIFFFFFDDFA:::D998@A??<844432125774----/158::85522443433=::91//
@SRR057408.4 FW8Y5CK02R76ED length=49
FIIIIIIIII@@@HIIIHFFFFHHFFFFFFFDDBBBBA=89444484//

No matter what I try along the lines of
Code:
sed -n '1,${p;n;n}'

, I can't get it to work. I'm sure there is an easy to specify the printing of every first and fourth line only but for future reference, how would I specify "print lines after lines beginning with a plus sign?"

Thanks,
Kevin

---------- Post updated at 08:34 PM ---------- Previous update was at 08:14 PM ----------

Well I finally figured this much out:
Code:
sed -n '1~4p;4~4p' demo.fastq

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

print the line immediately after a regexp; but regexp is a sentence

Good Day, Im new to scripting especially awk and sed. I just would like to ask help from you guys about a sed command that prints the line immediately after a regexp, but not the line containing the regexp. sed -n '/regexp/{n;p;}' filename What if my regexp is 3 word or a sentence. Im... (3 Replies)
Discussion started by: ownins
3 Replies

2. UNIX for Dummies Questions & Answers

grep N lines after match and then print them on 1 line each

Hello I have a silly question. I need to grep a match in text file and then print 5 lines after it. grep -A 5 .... do it. OK The next thing I can not handle is I need each output to be on 1 line match line2 line3 line4 line5 match line2 line3 line4 line5 etc.. I will really... (10 Replies)
Discussion started by: alekkz
10 Replies

3. Shell Programming and Scripting

print 2 lines above regexp

I am on a Solaris 10 x86 system sample code before3 before2 before1 group after1 after2 after3 I want to grab the second line above my regexp regexp=group I want to grab ONLY the before2 line I have numerous sed and awk ways of grabbing X line below the regexp, but no luck... (1 Reply)
Discussion started by: snoman1
1 Replies

4. Shell Programming and Scripting

print first few lines, then apply regex on a specific column to print results.

abc.dat tty cpu tin tout us sy wt id 0 0 7 3 19 71 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 133.2 0.0 682.9 0.0 1.0 0.0 7.2 0 79 c1t0d0 0.2 180.4 0.1 5471.2 3.0 2.8 16.4 15.6 15 52 aaaaaa1-xx I want to skip first 5 line... (4 Replies)
Discussion started by: kchinnam
4 Replies

5. Shell Programming and Scripting

print lines between line number

Hi, Anyone help me to print the lines from the flat file between 879th line number and 1424th line number. The 879 and 1424 should be passed as input to the shell script(It should be dynamic). Can any one give me using sed or awk? I tried using read, and print the lines..Its taking too... (3 Replies)
Discussion started by: senthil_is
3 Replies

6. Shell Programming and Scripting

Print lines between a regExp & a blank line

Hi, I have a file, say files_list, as below (o/p of ls -R cmd) $ cat files_list /remote/dir/path/to/file: sub-dir1 sub-dir2 sub-dir3 ... /remote/dir/path/to/file/sub-dir1: remote_file1.csv.tgz <blank line 1> /remote/dir/path/to/file/sub-dir2: remote_file2.csv.tgz <blank... (3 Replies)
Discussion started by: dips_ag
3 Replies

7. Shell Programming and Scripting

sed print first line before regexp and all lines after

Hi All I'm trying to extract the line just above a regexp and all lines after this. I'm currently doing this in two steps sed -n -e "/^+---/{g;p;}" -e h oldfile.txt > modified.txt sed -e "1,/^+---/d" -e "/^$/d" oldfile.txt >>modified.txt Sample sometext will be here sometext will be... (3 Replies)
Discussion started by: Celvin VK
3 Replies

8. Shell Programming and Scripting

Print the first line for each multiple lines

Hi all, i need help to extract each first line from multiple lines occurrences based on different patterns (name) starting from the fourth lines like follows:- // header 1 header 2 header 3 // no acc name score rank //... (2 Replies)
Discussion started by: redse171
2 Replies

9. Shell Programming and Scripting

Print multiple lines on one line

Hi All, I have a file looks like: rst:singh:99.0.20-X86 2 rst:ACSI_SIN_SERVICES rst:singh:99.0.20-X86 2 rst:ACSI_BISI want to wrap 3rd col in one line and add variable value at start and ending of line and I wrote command: cat file | awk '{print $3}' | xargs > command.txt sed -e... (1 Reply)
Discussion started by: rakeshtomar82
1 Replies

10. UNIX for Beginners Questions & Answers

Print number of lines for files in directory, also print number of unique lines

I have a directory of files, I can show the number of lines in each file and order them from lowest to highest with: wc -l *|sort 15263 Image.txt 16401 reference.txt 40459 richtexteditor.txt How can I also print the number of unique lines in each file? 15263 1401 Image.txt 16401... (15 Replies)
Discussion started by: spacegoose
15 Replies
nljust(1)						      General Commands Manual							 nljust(1)

NAME
nljust - justify lines, left or right, for printing SYNOPSIS
digits] seq] just] mode] order] margin] width] ck] [file ...] DESCRIPTION
formats for printing data written in languages with a right-to-left orientation. It is designed to be used with the and the commands (see pr(1) and lp(1)). reads the concatenation of input files (or standard input if none are given) and produces on standard output a right-to-left formatted ver- sion of its input. If appears as an input file name, reads standard input at that point. Use to delimit the end of options. formats input files for all languages that are read from right to left. For languages that have a left-to-right orientation, the command merely copies input files to standard output. Options recognizes the following options: Justify data for all languages, including those having a left-to-right text orientation. By default only right-to-left language data is justified. For all other languages, input files are directly copied to standard output. Select enhanced printer shapes for some Arabic characters. With this option, two-character combinations of laam and alif are replaced by a single character. Triggers ISO 8859-6 interpretation of the data. Processes digits for output as hindi, western, or both. digits can be or both. Use seq as the escape sequence to select the primary character set. This escape sequence is used by languages that have too many characters to be accommodated by ASCII in a single 256-character set. In these cases, the seq escape sequence can be used to select the non-ASCII character set. The escape character itself(0x1b) is not given on the command line. Hewlett-Packard escape sequences are used by default. If just is left justify print lines. If just is right-justify print lines starting from the (designated or default) print width column. The default is right justification. Replace leading spaces with alternative spaces. Some right-to-left character sets have a non-ASCII or alternative space. This option can be useful when filtering out- put (see pr(1)). With right justification, the option causes line numbers to be placed immediately to the right of the tab character. Without the option, right justification causes line numbers to be placed at the print-width column. By default, leading spaces are not replaced by alternative spaces. Indicate mode of any file to be formatted. Mode refers to the text orientation of the file when it was created. If mode is assume Latin mode. If mode is assume non-Latin mode. By default, mode information is obtained from the environment variable. Do not terminate lines containing printable characters with a new-line. By default, print lines are terminated by new-lines. Indicate data order of any file to be formatted. The text orientation of a file can affect the way its data is arranged. If order is assume keyboard order. If order is assume screen order. By default, order information is obtained from the environment variable. Truncate print lines that do not fit the designated or default line length. Print lines are folded (that is, wrapped to next line) by default. Expand input tabs to column positions k+1, 2*k+1, 3*k+1, etc. Tab characters in the input are expanded to the appropriate number of spaces. If k is 0 or is omitted, default tab settings at every eighth position is assumed. If cd (any non-digit character) is given, it is treated as the input tab character. The default for c is the tab character. always expands input tabs. This option provides a way to change the tab character and setting. If this option is specified, at least one of the parameters c or k must be given. Designate a number as the print margin. The print margin is the column where truncation or folding takes place. The print margin determines how many characters appear on a single line and can never exceed the print width. The print margin is relative to the justifica- tion. If the print margin is 80, folding or truncation occurs at column 80 starting from the right during a right jus- tification. Similarly, folding or truncation occurs at column 80 starting from the left during a left justification. By default, the print margin is set to column 80. Designates a number as the print width. The print width is the maximum number of columns in the print line. Print width determines the start of text during a right justification. The larger the print width, the further to the right the text will start. By default, an 80-column print width is used. EXTERNAL INFLUENCES
Environment Variables The environment variable determines the mode and order of the file. The syntax of is [mode][_order]. mode describes the mode of a file where represents Latin mode and represents non-Latin mode. Non-Latin mode is assumed for values other than and order describes the data order of a file where is keyboard and is screen. Keyboard order is assumed for values other than and Mode and order information in can be overridden from the command line. The environment variable determines the direction of a language (left-to-right or right-to-left) and whether context analysis of characters is necessary. The environment variable determines whether a language has alternative numbers. The environment variable determines the language in which messages are displayed. International Code Set Support Single-byte character code sets are supported. EXAMPLES
Right justify on a 132-column printer with a print margin at column 80 (the default): Right justify output of with line numbers on a 132-column printer with a print margin at column 132: WARNINGS
If with line numbers option) is piped to the separator character must be a tab(0x09). It is the user's responsibility to ensure that the environment variable accurately reflects the status of the file. Mode and justification must be consistent. Only non-Latin-mode files can be right justified in a meaningful way. Similarly, only Latin- mode files can be safely left justified. If mode and justification do not match, the results are undefined. If present, alternative numbers always have a left-to-right orientation. The command is HP proprietary, not portable to other vendors' systems, and will not be provided in future HP-UX releases. AUTHOR
was developed by HP. SEE ALSO
forder(1), lp(1), pr(1), strord(3C). nljust(1)
All times are GMT -4. The time now is 08:28 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy