10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi All,
I am trying to replace a certain value from one place in a file . In the below file at position 35 I will have 8 I need to modify all 8 in that position to 7
I tried
awk '{gsub("8","7",$35)}1' infile > outfile ----> not working
sed -i 's/8/7'g' infile --- it is replacing all... (3 Replies)
Discussion started by: arunkumar_mca
3 Replies
2. Shell Programming and Scripting
I want to write a script that extracts a value from a line of text. I know it can be done using awk but I've never used awk before so I don't know how to do it. The text is:
Mem: 100M Active, 2150K Cache, 500M Buf, 10G Free
I want to extract the free memory value to use as a variable. In... (5 Replies)
Discussion started by: millsy5
5 Replies
3. Shell Programming and Scripting
Hi guys!
I'm new to scripting and I need to write a script in awk.
Here is example of file on which I'm working
ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00
ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00
ATOM 4690 CD ... (18 Replies)
Discussion started by: grincz
18 Replies
4. UNIX for Dummies Questions & Answers
Hey guys & gals,
I am hoping for some advice on a sed or awk command that will
allow to only print lines from a file that contain 3 numeric values.
From previous searches here I saw that ygemici used the sed command
to remove lines containing more than 3 numeric values ;
however how... (3 Replies)
Discussion started by: TAPE
3 Replies
5. Shell Programming and Scripting
Hi,
I'm quite new to scripting, but know a few AWK statements.
I have the following line in my script:
hostname=`echo $file | awk 'BEGIN{FS=OFS="."}{$NF=""; NF--; print}'`
I use this in my script to rename files, which are similar to this:
name.mvkf.mkvfm.mkfvm.1
To the... (4 Replies)
Discussion started by: TauntaunHerder
4 Replies
6. Shell Programming and Scripting
Hello,
I am obviously quite new to unix and awk. I need to parse certain columns of a file (delimited by spaces), and somehow save the value of this column somewhere, together with the value of the column just after it (by pairs; so something like ).
I'm then supposed to count the times that... (9 Replies)
Discussion started by: acsg
9 Replies
7. Shell Programming and Scripting
How to check if the file contains only numeric values.
I don't want to read entire file it eats lot of cpu
Or any way which consumes less memory n cpu..
Please suggest
-S (2 Replies)
Discussion started by: sunilmenhdiratt
2 Replies
8. Shell Programming and Scripting
I have a file whose contents are:
$ cat file1
cfd_V03R37
cfd_V03R38
tried
sed 's///g' file1 > file2
$cat file1
0337
0338
Is there any way by which i can work on same file and write o/p to the same file instead of using file2 (3 Replies)
Discussion started by: vjasai
3 Replies
9. Programming
I am getting back on the C++ programming after many years away. I recently received an SDK that has code like this where numeric values end in 'U'. What does this mean?
if ((ptr % 16U) == 0U)
return buffer; (3 Replies)
Discussion started by: sneakyimp
3 Replies
10. Shell Programming and Scripting
What could be the regular expression with gsub function in awk to replace all numerics having spaces before to be replaced with 0s? (1 Reply)
Discussion started by: videsh77
1 Replies