Could someone please tell me how to delete all lines above a line which contains a particular string? (possibly using SED command)
I know how to do this if the target string appears in only one line of file but when it appears in multiple lines it only deletes from the first line which the string appears to the top line. I want it to delete from the last line which the string appears to the top line.
e.g I have the file below which contains 8 lines:
Code:
$ cat file.txt
a
b
c
d
a
b
c
d
$
I want to delete everything above the line with the charater "b" to get the below:
Code:
c
d
I tried with the command below but it only deleted line from the top to the first line which contains the charater "b"
I have output like the following:
B D 20070116095820001 N D S0000579.LOG S0000582.LOG
B D 20070116095750001 N D S0000574.LOG S0000576.LOG
B D 20070116095734001 N D S0000570.LOG S0000573.LOG
B D 20070116095705001 N D S0000569.LOG S0000569.LOG
B D ... (5 Replies)
# cat test
mpath0:253:8:L--w:0:1:2:mpath-2000b080008002158
mpath19:253:7:L--w:0:1:1:mpath-2000b080013002158
mpath21:253:9:L--w:0:1:0:mpath-2000b080015002158
mpath18:253:6:L--w:0:1:1:mpath-2000b080012002158
mpath12:253:1:L--w:0:1:2:mpath-2000b080009002158
#
The above is the i/p and the... (3 Replies)
Hi,
I am new to Unix. I have written a script in Unix. I wanted to schedule this script in cronjobs which has to be run daily at 10AM.
Already i have some cron jobs running on my unix server. In addition to these I have to edit the crontab. I know I have to execute the command "crontab -e" to... (9 Replies)
Hello,
I have to add the string "YES" to the end of all records of files in a dir other than the first(header) and the last(trailer) record. viz, the first and the last record in a file has to be identified and exempted from the edit.
I tried an awk script. But there seems to be no direct... (8 Replies)
hi,
i need to remove the first column (and dash) from this text file.
Is there any unix command allowing me to do it ?
1-16
2-28
3-16
4-20
5- 8
6-32
7-19
8-16
9-27
10- 7
11-14
12-18
thanks (2 Replies)
I wrote this script to create and edit a large number of websites based on a template site and a collection of text files which have the relevant strings in them delimited by colons. I run it and the shell doesn't produce any errors, but when it gets to the for loop where it actually has to edit... (2 Replies)
Hi everyone , i am new in shell scripting and i want to do a simple job.
A have in a file a text that looks like :
4770 maniac 20 0 13680 312 240 S 0.0 0.0 0:00.00 pro 4770 maniac 20 0 23448 312 240 S 0.0 0.0 0:00.00 pro 4770 maniac 20 0 33216 312 240 S 0.0 0.0 0:00.00 pro
and i want to... (2 Replies)
how can i make this sed command run faster?
sed '51000000,51347442!d' file
and
sed '51347442,$ !d' file
File is a 9GB in size.
it runs on sunos 5.10 and linux red hat 6 servers and i use bash. (5 Replies)
Hi friends,
Issue1:
I have a text file with the first line like this
#chrom start end Readcount_A Normalized_Readcount_A ReadcountB Normalized_Readcount_B Fc_A_vs_B pvalue_A_vs_B FDR_A_vs_B Fc_B_vs_A pvalue_B_vs_A FDR_B_vs_A <a href="http://unix.com/">Link</a>
How can I change it to the... (11 Replies)
hi, could someone share a short script that would process a .txt file and do the following, for example the text file has this form
0:1.0 1:1.0 2:2.0 3:3.0 4:4.0 5:5.0 6:6.0 7:7.0 8:8.0 ... {newline}
9:9.0 10:10.0 11:11.0 12:12.0 13:13.0 14:14.0 15:15.0 16:16.0 17:17.0 ... {newline}
and I... (3 Replies)
Discussion started by: c_lady
3 Replies
LEARN ABOUT OPENDARWIN
curs_deleteln
curs_deleteln(3X)curs_deleteln(3X)NAME
deleteln, wdeleteln, insdelln, winsdelln, insertln, winsertln - delete and insert lines in a curses window
SYNOPSIS
#include <curses.h>
int deleteln(void);
int wdeleteln(WINDOW *win);
int insdelln(int n);
int winsdelln(WINDOW *win, int n);
int insertln(void);
int winsertln(WINDOW *win);
DESCRIPTION
The deleteln and wdeleteln routines delete the line under the cursor in the window; all lines below the current line are moved up one line.
The bottom line of the window is cleared. The cursor position does not change.
The insdelln and winsdelln routines, for positive n, insert n lines into the specified window above the current line. The n bottom lines
are lost. For negative n, delete n lines (starting with the one under the cursor), and move the remaining lines up. The bottom n lines
are cleared. The current cursor position remains the same.
The insertln and winsertln routines, insert a blank line above the current line and the bottom line is lost.
RETURN VALUE
All routines return the integer ERR upon failure and an OK (SVr4 specifies only "an integer value other than ERR") upon successful comple-
tion.
PORTABILITY
These functions are described in the XSI Curses standard, Issue 4. The standard specifies that they return ERR on failure, but specifies
no error conditions.
NOTES
Note that all but winsdelln may be macros.
These routines do not require a hardware line delete or insert feature in the terminal. In fact, they won't use hardware line
delete/insert unless idlok(..., TRUE) has been set on the current window.
SEE ALSO curses(3X)curs_deleteln(3X)