Hi, experts,
I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)
Hello,
Hello Firends,
I have file like below. I want to remove selected blocks say abc,pqr,lst. how can i remove those blocks from file.
zone abc {
blah
blah
blah }
zone xyz {
blah
blah
blah }
zone pqr {
blah
blah
blah } (4 Replies)
Hi all
I currently use the following in shell.
#!/bin/sh
while read LINE
do
perl -i -ne "$/ = ''; print if !m'Using archive: ${LINE}'ms;" "datafile"
done < "listfile"
NOTE the single quote delimiters in the expression. It's highly likely the 'LINE' may very well have characters in it... (3 Replies)
Hi,
I need a unix shell script for this requirement and is URGENT
My input text file contains
A-1
B-1
C-1
D-2
E-2
F-3
G-3
H-3
I-3
J-4
K-4
L-5
My expected result should be:
if flag is 1, it has to delete A, B, C
if flag is 2, it has to delete D,E
if flag is 3, it has to delete... (1 Reply)
Hi everybody!
I need to delete several vertical lines in a huge text file.
It should work like the example below. Delete the vertical lines 2 and 8.
123456789
masldfjla
afsajfwel
sajfljsaf
safsarfrl
sajfeljwq
1345679
msldfja
asajfwl
sjfljsf
sfsarfl
sjfeljq
Is there a... (11 Replies)
hi guys,
I have very large txt files (200GB) and just want to to delete the first two lines (headers). So far I used
sed -i '1,2d' infile.txtbut this command always takes extremely long as it writes all again. Is there a better way to do it (ie just to delete the lines without writing all... (2 Replies)
Hi,
I am trying to extract lines from a text file given a text file containing line numbers to be extracted from the first file. How do I go about doing this? Thanks! (1 Reply)
Hi Folks,
I am a novice and need to build a script in bash. I have 2 text files data.txt file is big file, column 2 is the we need to search and delete in the output. The filter file contains the rows to be deleted.
Data.txt
state city zone
Alabama Huntsville 4
California SanDiego 3... (3 Replies)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
LEARN ABOUT ULTRIX
paste
paste(1) General Commands Manual paste(1)Name
paste - merge file data
Syntax
paste file1 file2...
paste -dlist file1 file2...
paste -s [-dlist] file1 file2...
Description
In the first two forms, concatenates corresponding lines of the given input files file1, file2, etc. It treats each file as a column or
columns of a table and pastes them together horizontally (parallel merging).
In the last form, the command combines subsequent lines of the input file (serial merging).
In all cases, lines are glued together with the tab character, or with characters from an optionally specified list. Output is to the
standard output, so it can be used as the start of a pipe, or as a filter, if - is used in place of a file name.
Options
- Used in place of any file name, to read a line from the standard input. (There is no prompting).
-dlist Replaces characters of all but last file with nontabs characters (default tab). One or more characters immediately following -d
replace the default tab as the line concatenation character. The list is used circularly, i. e. when exhausted, it is reused. In
parallel merging (i. e. no -s option), the lines from the last file are always terminated with a new-line character, not from the
list. The list may contain the special escape sequences:
(new-line), (tab), \ (backslash), and (empty string, not a null
character). Quoting may be necessary, if characters have special meaning to the shell (for example, to get one backslash, use
-d"\\" ).
Without this option, the new-line characters of each but the last file (or last line in case of the -s option) are replaced by a
tab character. This option allows replacing the tab character by one or more alternate characters (see below).
-s Merges subsequent lines rather than one from each input file. Use tab for concatenation, unless a list is specified with -d
option. Regardless of the list, the very last character of the file is forced to be a new-line.
Examples
ls | paste -d" " -
list directory in one column
ls | paste - - - -
list directory in four columns
paste -s -d"
" file
combine pairs of lines into lines
Diagnostics
line too long
Output lines are restricted to 511 characters.
too many files
Except for -s option, no more than 12 input files may be specified.
See Alsocut(1), grep(1), pr(1)paste(1)