10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Unix Gurus,
yesterday I asked a question and got answer, it works fine.
I have one more thing need to help
in the code
awk '{print substr($0,1,3)"xxx"substr($0,7)}' file
If I have 50 charactor's need to be replaced, is there any easy way to use reg exp or I have to input 50 XXXXx......... (12 Replies)
Discussion started by: ken6503
12 Replies
2. Shell Programming and Scripting
Hello,
I have big files which I wanna filter them based on first column.
first column should be one of these strings: chr2L || chr2R || chr3L || chr3R || chr4 || chrX
and something like chr2Lh or chrY or chrM3L is not accepted.
I used the following command:
awk '{ if ($1=="chr2L" ||... (5 Replies)
Discussion started by: @man
5 Replies
3. Shell Programming and Scripting
Hi Experts,
I am adding a column of numbers with awk , however not getting correct output:
# awk '{sum+=$1} END {print sum}' datafile
2.15291e+06
How can I getthe output like : 2152910
Thank you..
# awk '{sum+=$1} END {print sum}' datafile
2.15079e+06 (3 Replies)
Discussion started by: rveri
3 Replies
4. Shell Programming and Scripting
Hello world,
I was wondering if there is a nicer way to write the following code (in AWK):
awk '
FNR==NR&&$1~/^m$/{tok1=1}
FNR==NR&&$1~/^m10$/{tok1=1}
' my_file
In fact, it looks for m2, m4, m6, m8 and m10 and then return a positive flag. The problem is how to define 10 thanks... (3 Replies)
Discussion started by: jolecanard
3 Replies
5. Shell Programming and Scripting
Hi Experts,
Can you please help me out for the below scenario,
I have a variable length file with the fixed number of columns, in which the fields are delimited by pipe symbol (|). From that file I have to extract the lines which has the following scenario,
The field1 in a... (1 Reply)
Discussion started by: chella
1 Replies
6. UNIX for Dummies Questions & Answers
Hi, I need
to make some extraction . with the following input to get the right output.
input: /etc/exp/home/bin ====> output: exp
and
input: aex1234 ===> output: ex
Thanks for your help, (4 Replies)
Discussion started by: yeclota
4 Replies
7. Shell Programming and Scripting
in shell scripting there is extensive usage of
i> regular expression
ii>sed
iii>awk
can anyone tell me the suitable contexts ...i mean which one is suitable for what kind of operation.
like the reg-exp and sed seems to be doing the same job..i.e pattern matching (1 Reply)
Discussion started by: mobydick
1 Replies
8. UNIX for Dummies Questions & Answers
I can print a line with an expression using this:
awk '/regex/'
I can print the line immediately before an expression using this:
awk '/regex/{print x};{x=$0}'
How do I print the line immediately before and then the line with the expression? (2 Replies)
Discussion started by: nickg
2 Replies
9. Shell Programming and Scripting
Ive got a file with words and also numbers.
Bla BLA
10 10
11 29
12 89
13 35
And i need to change "10,29,89,25" and also remove anything that contains actually words... (4 Replies)
Discussion started by: maskot
4 Replies
10. Shell Programming and Scripting
Any idea please:
How to pass a reg. exp. variable to awk call in a shell???
Thank u
#!/bin/sh
reg_exp=name
awk '/reg_exp/{
print;
}' $1 (5 Replies)
Discussion started by: andy2000
5 Replies