10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
I have a very large file with millions of entries identified by @M. I am using the following script to "extract" entries based on specific strings/patterns:
#!/bin/bash
if ]
then
file=$1
else
echo "Input_file passed as an argument $1 is NOT found."
exit;
fi
MID=(NULL "string-1"... (10 Replies)
Discussion started by: Xterra
10 Replies
2. Shell Programming and Scripting
Sorry for the weird title but i have the following problem.
We have several files which have between 10000 and about 500000 lines in them. From these files we want to remove lines which contain a pattern which is located in another file (around 20000 lines, all EAN codes). We also want to get... (28 Replies)
Discussion started by: SDohmen
28 Replies
3. Shell Programming and Scripting
Just my second week working on awk I need a hint for the following tasks.
I want to limit my logfile from the very outset to 200 lines. All I do until now is
head -c 10K >> /home/uplog.txt | awk 'END{print NR " swap " NF$5; exit}' /home/uplog.txt;
After being read it shall print the very... (27 Replies)
Discussion started by: 1in10
27 Replies
4. Shell Programming and Scripting
I have a file full of coordinates of the form:
37.68899917602539 58.07500076293945 57.79100036621094
The numbers don't always have the same number of decimal points. I need to reduce the decimal points of all the numbers (there are 128 rows of 3 numbers) to 2.
I have tried to do this... (2 Replies)
Discussion started by: crunchgargoyle
2 Replies
5. Shell Programming and Scripting
I want to count lines of a file using AWK (only) and not in the END part like this awk 'END{print FNR}' because I want to use it.
Does anyone know of a way?
Thanks a lot. (7 Replies)
Discussion started by: guitarist684
7 Replies
6. Shell Programming and Scripting
Hello,
I am a java programmer but want to try unix for a purpose where I need to reduce a file using its first field.. Here is the sample data:
admin;2;0;;
admission;8;0;;
aman;1;0;;
caroline;0;4;;
cook;0;4;;
cook;2;0;;
far;0;3;;
far;1;5;;
I am explaining the dataset first. There... (5 Replies)
Discussion started by: shekhar2010us
5 Replies
7. Shell Programming and Scripting
Hi there, I have a text file with several colums separated by "|;#" I need to search the file extracting all columns starting with the value of "1" or "2" saving in a separate file just the first 7 columns of each row maching the criteria, with replacement of the saparators in the nearly created... (4 Replies)
Discussion started by: capnino
4 Replies
8. Solaris
My root file size has reached 80% and I am looking where all i can reduce the file size . Here is the output of top directories in / . To me none of this looks useful but not sure . We use an appplication and email. Which all can be deleted . Please advise .
2016989
989445 /var
930059 ... (2 Replies)
Discussion started by: Hitesh Shah
2 Replies
9. UNIX for Dummies Questions & Answers
I have a script which includes an FTP. The filename is too long for my target area. The filename is HD012_ABCD_EFGH_061004_F_300_40. I need to the filename to be HD012_ABCD_EFGH_061004_F_. Any ideas. (5 Replies)
Discussion started by: paul1s
5 Replies
10. UNIX for Advanced & Expert Users
I have a file which is one big long line of text about 10Kb long.
Can someone provide a way using awk to introduce carriage returns every 40 chars in this file.
Any other solutions would also be welcome.
Thank you in advance. (5 Replies)
Discussion started by: martinbarretto
5 Replies