awk - delete last two letters

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1. Shell Programming and Scripting

awk : match only the pattern string , not letters or numbers after that.

Hi Experts, I am finding difficulty to get exact match: file OPERATING_SYSTEM=HP-UX LOOPBACK_ADDRESS=127.0.0.1 INTERFACE_NAME="lan3" IP_ADDRESS="10.53.52.241" SUBNET_MASK="255.255.255.192" BROADCAST_ADDRESS="" INTERFACE_STATE="" DHCP_ENABLE=0 INTERFACE_NAME="lan3:1"...

2. Shell Programming and Scripting

Grep/Awk on 1st 2 Letters in 2nd Column of File

Hi everyone. I need to change a script (ksh) so that it will grep on the 1st 2 letters in the second column of a 5 column file such as this one: 192.168.1.1 CAXY0_123 10ABFL000001 # Comment 192.168.1.2 CAYZ0_123 10ABTX000002 # Comment 192.168.2.1 FLXY0_123 11ABCA000001 ...

3. Shell Programming and Scripting

AWK count letters words

Hi All! can anyone help me with this code? I want to count words or letters in every line with if(count>20){else echo $myline} awk '/<script /{p=1} /<\/script>/{p=0; next}!p' index.html | while read myline; do echo $myline done Thank you !!!

4. UNIX for Dummies Questions & Answers

Selective Replacements: Using sed or awk to replace letters with numbers in a very specific way

Hello all. I am a beginner UNIX user who is using UNIX to work on a bioinformatics project for my university. I have a bit of a complicated issue in trying to use sed (or awk) to "find and replace" bases (letters) in a genetics data spreadsheet (converted to a text file, can be either...

5. UNIX for Dummies Questions & Answers

Awk pattern with letters and forward slash

Hi, I have a tab delimited file "test.txt" like this: id1 342 C/T id2 7453 T/A/-/G/C id3 531 T/C id4 756 A/T/G id5 23 A/G id6 717 T/A/C id7 718 C/T/A And so on, with the possible choices for letters being A,C,T,G. I would like to exclude from my file all the lines that do not have...

6. Shell Programming and Scripting

Delete certain column awk

Hi experts, I have a file, where inside this file contains multiple columns (up to 2000 columns): 0.05 0.54 2.02 0.21 1.39 2.92 0.31 1.75 3.34 I want to delete column 3,6,9,12,15,18,21... etc (any columns where can be divided from value 3), so that results is like: 0.05 0.54 0.21 1.39...

7. UNIX for Dummies Questions & Answers

Grep /Awk letters X - X in every line and print it as a mac address

hey i m kinda new to this so i will appreciate any help , i have this list of values: pwwn = 0x50012482009cd7a7 nwwn=0x50012482009cd7a6 port_id = 0x280200 pwwn = 0x5001248201bcd7a7 nwwn=0x5001248201bcd7a6 port_id = 0x280300 pwwn = 0x50012482009c51ad nwwn=0x50012482009c51ac port_id =...

8. Shell Programming and Scripting

Delete text between square brackets and also delete those square brackets using sed or awk

Hi All, I have a text file which looks like this: computer programming systems engineering I want to get rid of these square brackets and also the text that is inside these brackets. So that my final text file looks like this: computer programming systems engineering I am using...

9. Shell Programming and Scripting

how to delete line with awk

Hi I have a multi -line file which is sorted by the 1-st colomn in the following format: 400 0000 0001 1000 1010 0111 0000 1000 0000 402 1101 0000 1100 1010 0111 1000 1000 0000 403 1001 0000 1100 1010 0111 0000 1000 0000 495 1000 0000 1100 1010 0111 0000 1000 0000 500 0000 0001 1000 0010...

10. Shell Programming and Scripting

need to delete lines that start with letters

Hi, I need to remove all lines from a file that do not start with numbers For instance, if the first three characters on any line are not numbers, delete those lines I've tried to do it with awk and it's not working, any ideas ? Thanks

Shell Programming and Scripting