9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
I know there are many questions and replies regarding grep command.
What I would like to do is a bit different.
File A:
hello world welcome to my page
this is my test site
how are you
I am fine, thank you
where have you been
I was in hospital
really hope you are fine now
Thanks,... (10 Replies)
Discussion started by: baris35
10 Replies
2. Shell Programming and Scripting
Hello,
I'm trying to remove the duplicate consecutive lines with specific string "WARNING".
File.txt
abc;
WARNING 2345
WARNING 2345
WARNING 2345
WARNING 2345
WARNING 2345
bcd;
abc;
123
123
123
WARNING 1234
WARNING 2345
WARNING 2345
efgh; (6 Replies)
Discussion started by: Mannu2525
6 Replies
3. Shell Programming and Scripting
I would like to identify every line with a specific string, in this case: "Mamma".
I would like to remove that line, and also the line above it and below it. So the below
Where are all amazing Flats
Look At The Great Big White
Hey There Hot Mamma
You Are So hot Baby
I wish You were Mine... (5 Replies)
Discussion started by: phpchick
5 Replies
4. UNIX for Dummies Questions & Answers
i have file input
dsgfdgdfgd> cab |egrep -i '(active|cbu)'
130502-11:34:11 10.133.1.153 9.0j stopfile=/tmp/15959
Trying password from ipdatabase file: /opt/ericsson/amos/moshell/sitefiles/ipdatabase...
.. 0 1 CBU1 OFF ON 16HZ ROJ1192209/1 R5E TU8BZ04466... (3 Replies)
Discussion started by: radius
3 Replies
5. Shell Programming and Scripting
Symmetrix ID : 00000001234
Host Name : myown
Identifiers Found : 5000000000000000
5000000000000001
Device Cap(MB) Attr Dir:P
------ ------- ---- ----
1234 25886 (M) 8D:1, 9D:1
0123 25886 (M) 8D:1, 9D:1
1345 25886 (M) ... (5 Replies)
Discussion started by: maddy.san
5 Replies
6. UNIX for Dummies Questions & Answers
Hello,
A basic query. How can I remove a string from a specific column.
For example, remove "abcd" just from column 2 in example file:
abcd abcd1
abcd abcd2
abcd abcd3
to get output:
abcd 1
abcd 2
abcd 3
Thank you!:) (4 Replies)
Discussion started by: auburn
4 Replies
7. Shell Programming and Scripting
using sed to replace a specific string on a specific line number using variables
this is where i am at
grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean
grep -n Destination... (2 Replies)
Discussion started by: todd.cutting
2 Replies
8. UNIX for Dummies Questions & Answers
If I have a data test.txt with 1000 columns such as:
id sex gene1 gene2 gene2.dl gene3 gene4 gene4.dl .......
1 1 AA AT AT TT AT AT .......
2 1 AG TT TT TA AA AA .......
3 2 AA AT AT TT AT ... (2 Replies)
Discussion started by: AMBER
2 Replies
9. Shell Programming and Scripting
I am looking for a way to remove any line in a text file that contains the string "Mac address". I guess you would grep and sed, but I am not sure how to do this. Thanks for you help. (3 Replies)
Discussion started by: CBarraford
3 Replies
HEAD(1) User Commands HEAD(1)
NAME
head - output the first part of files
SYNOPSIS
head [OPTION]... [FILE]...
DESCRIPTION
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-c, --bytes=[-]NUM
print the first NUM bytes of each file; with the leading '-', print all but the last NUM bytes of each file
-n, --lines=[-]NUM
print the first NUM lines instead of the first 10; with the leading '-', print all but the last NUM lines of each file
-q, --quiet, --silent
never print headers giving file names
-v, --verbose
always print headers giving file names
-z, --zero-terminated
line delimiter is NUL, not newline
--help display this help and exit
--version
output version information and exit
NUM may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T,
P, E, Z, Y.
AUTHOR
Written by David MacKenzie and Jim Meyering.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report head translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
tail(1)
Full documentation at: <http://www.gnu.org/software/coreutils/head>
or available locally via: info '(coreutils) head invocation'
GNU coreutils 8.28 January 2018 HEAD(1)