10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi
I am tryin to undertand piping
command1|command2
from what i learn output of cammand 2 is an intput for command 1 right?
If so .
What dose next sequence do
cat f1 >> f2 | grep '^'
I think it takes context of f1 and Concatenate's it to f2 and then looks for ....i don't know..... (7 Replies)
Discussion started by: iliya24
7 Replies
2. Ubuntu
Hi everybody,
I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form).
I am trying to extract some ids from within this file, which have certain parameters.
For example, some Of my IDs have the term 'No hit results'... (6 Replies)
Discussion started by: frymor
6 Replies
3. Ubuntu
Hi everybody,
I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form).
I am trying to extract some ids from within this file, which have certain parameters.
For example, some Of my IDs have the term 'No hit results'... (1 Reply)
Discussion started by: frymor
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I need to use a double grep so to speak. I need to grep for a particular item say BOB and then for each successful result I need to grep for another item say SMITH.
I tried grep "BOB" filename | grep "SMITH"
but it does not seem to work.
I can achieve my desired result using an... (12 Replies)
Discussion started by: mojoman
12 Replies
5. UNIX for Dummies Questions & Answers
There are are lots of examples of piping output FROM the 'ls' command TO another command, but how does one pipe output TO the 'ls -l' command?
For example, use 'which' to find a file, then use 'ls -l' to view the permissions, groups, etc. in a single step:
which <filename> | ls -l
returns... (4 Replies)
Discussion started by: johne1
4 Replies
6. Shell Programming and Scripting
Hi All,
I am trying to perform the below csh code in Perl, but i am unfamiliar with Perl. Can anybody give me some advice on it ?
Csh Code:
cat filename |grep AAA| grep BBB| awk '{print("already_appended")' (11 Replies)
Discussion started by: Raynon
11 Replies
7. Shell Programming and Scripting
Howdy folks,
I am fairly new to scripting but have lost of expirience in c++, pascal, and a few other. I am trying to complete a file search script that is sent a file name containing data to search that is arranged like this
"id","name","rating"
"1","bob","7"
etc
and an argument to... (1 Reply)
Discussion started by: dyrt
1 Replies
8. Shell Programming and Scripting
Is anyone piping commands to ex from scripts?
I.E. echo '%s/change this/to that/\nwq' | ex file.name
I've been using it for years with AIX, Solaris, SGI, with variations ksh and Mandriva and others with pdksh. I've just started using CentOS with ksh and it no longer works. I've tried single... (2 Replies)
Discussion started by: mph
2 Replies
9. Shell Programming and Scripting
I've got a file with lots of commands I want to run in it. They're formatted like so:
cp /path/to/file /path/to/new/file
and on and on and on.
Hundreds of them.
Anyways, I'd like to execute them one at a time, then check what time it is, and repeat this process until 7am.
I can... (3 Replies)
Discussion started by: ProFiction
3 Replies
10. Shell Programming and Scripting
I am using pipes (specifically piping out) in Perl to put an array from one file into an array in a different file. I can't figure out how to transfer the array. I kow how to open the pipe : open (FILEHANDLE, "| file") or die~
but how do I transfer the array. I think it has something to do with... (1 Reply)
Discussion started by: lnatz
1 Replies