Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Parse out specific lines

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Parse out specific lines
# 1  
Old 02-16-2011
Parse out specific lines
Hello,

For the life of me, I can't figure out how to extract only certain lines of a file. For example, the file contains:

Code:
project.max-sem-ids
        privileged      1.02K       -   deny                                 -
        system          16.8M     max   deny                                 -
project.max-crypto-memory
        privileged      47.1GB      -   deny                                 -
        system          16.0EB    max   deny                                 -
project.max-tasks
        system          2.15G     max   deny                                 -
project.max-lwps
        system          2.15G     max   deny                                 -
project.cpu-cap
        system          4.29G     inf   deny                                 -
project.cpu-shares
        privileged          1       -   none                                 -
        system          65.5K     max   none                                 -
zone.max-swap
        system          16.0EB    max   deny                                 -
zone.max-locked-memory
        system          16.0EB    max   deny                                 -
zone.max-shm-memory
        system          16.0EB    max   deny                                 -
zone.max-shm-ids
        system          16.8M     max   deny                                 -
zone.max-sem-ids
        system          16.8M     max   deny                                 -

and say I only want to see the values for project.max-crypto-memory and project.max-lwps for example. How would I get the 1 or 2 lines which follow which are relevant to that value?

Any help appreciated.

Thanks,

PW
# 2  
Old 02-16-2011
Code:
nawk 'NF==1{if($1!~pat) f=0;else{f=1;print};next} f' pat='project.max-crypto-memory|project.max-lwps' myFile

# 3  
Old 02-17-2011
Code:
awk '/max-crypto-memory|max-lwps/{print RS$0}' RS="project" file
project.max-crypto-memory
        privileged      47.1GB      -   deny                                 -
        system          16.0EB    max   deny                                 -
project.max-lwps
        system          2.15G     max   deny                                 -

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Search and replace specific positions of specific lines

Hi, I have a file with hundreds of lines. I want to search for particular lines starting with 4000, search and replace the 137-139 position characters; which will be '000', with '036'. Can all of this be done without opening a temp file and then moving that temp file to the original file name. ... (7 Replies)
Discussion started by: dsid
7 Replies

2. Shell Programming and Scripting

Parse file for fields and specific text

I have a file of ~500,000 entries in the following: file.txt chr1 11868 12227 ENSG00000223972.5 . + HAVANA exon . gene_id "ENSG00000223972.5"; transcript_id "ENST00000456328.2"; gene_type "transcribed_unprocessed_pseudogene"; gene_status "KNOWN"; gene_name "DDX11L1"; transcript_type... (17 Replies)
Discussion started by: cmccabe
17 Replies

3. Shell Programming and Scripting

Parse text file using specific tags

awk -F "" '/<href=>|<href=>|<top>|<top>/ {print $3, OFS=\t}' source.txt > output.txt I'm not quite sure how to parse the attached file, but what I am trying to do is in a output file have the link (href=), name (after the <), and count (<top>) in 3 separate columns. My attempt is the above... (2 Replies)
Discussion started by: cmccabe
2 Replies

4. UNIX for Dummies Questions & Answers

Quick UNIX command to display specific lines in the middle of a file from/to specific word

This could be a really dummy question. I have a log text file. What unix command to extract line from specific string to another specific string. Is it something similar to?: more +/"string" file_name Thanks (4 Replies)
Discussion started by: aku
4 Replies

5. Shell Programming and Scripting

Parse and display specific columns

Hi.. I am in help of displaying this specific case. I have multiple files where i have to display accordingly. Input file ##INFO1 ##INFO2 ##INFO3 #CHROM POS INFO 57.sorted.bam 58.sorted.bam 59.sorted.bam 34.sorted.bam 55.sorted.bam... (12 Replies)
Discussion started by: empyrean
12 Replies

6. Shell Programming and Scripting

Print Specific lines when found specific character

Hello all, I have thousand file input like this: file1: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$ | | | |$$ $$ UERT | TTYH | TAFE | FRFG |$$ $$______|______|________|______|$$ $$ | | | |$$ $$ 1 | DISK | TR1311 | 1 |$$ $$ 1 |... (4 Replies)
Discussion started by: attila
4 Replies

7. Shell Programming and Scripting

Parse a String for a Specific Word

Hello, I'm almost there with scripting, and I've looked at a few examples that could help me out here. But I'm still at a lost where to start. I'm looking to parse each line in the log file below and save the output like below. Log File AABBCGCAT022|242|3 AABBCGCAT023|243|4... (6 Replies)
Discussion started by: ravzter
6 Replies

8. Shell Programming and Scripting

substitute a string on a specific position for specific lines

I woud like to substitue a string on a specific position for specific lines I've got a file and I would like to change a specific string from "TOCHANGE" to "ABCABCAB" For every line (except 1,2, 3 and the last one) , I need to check between the 9th and the 16th digits. For the 3rd line, I... (7 Replies)
Discussion started by: BSF
7 Replies

9. UNIX for Dummies Questions & Answers

How to parse the specific data from the file

Hi, I need to parse this data FastEthernet0/9,|FastEthernet0/10,|FastEthernet0/11,FastEthernet0/13|, FastEthernet0/12,FastEthernet0/24 . and get only the value like e.g 0/24,0/11. how to do this in shell script. Thanks in Advance. (2 Replies)
Discussion started by: MuthuAlagappan
2 Replies

10. Shell Programming and Scripting

how do i parse by specific column?

I have a log file with 13 columns. The 12th column contains the status code (example 200, 404, 500, 403, etc.) I want to remove all 200 status lines. so... 1. remove all the lines in which the 12th column has a 200. 2. display only the lines in which the 12th column shows a 500. ... (2 Replies)
Discussion started by: kmaq7621
2 Replies
Login or Register to Ask a Question