10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
In my bash script I want to add a code which remove all entries older than x days.
To simplify this problem, I have divided into 3 parts. (2 parts are done looking answer for 3rd part.)
To find the latest log date - Done
Latest_Time=`find . -name '*.tps' -exec sed '/endTime/!d; s/{//;... (3 Replies)
Discussion started by: Agoyals1986
3 Replies
2. Shell Programming and Scripting
Oracle Linux 6.5
$ cat someStrings.txt
GRANT select on MANHPRD.S_PROD_INT TO OR_PHIL;
GRANT select on MANHPRD.S_PROD_INT TO OR_PHIL;
GRANT select on SCOTT.emp to JOHN;
grant select on scott.emp to john;
grant select on scott.dept to hr;If you ignore the case and the empty space between the... (6 Replies)
Discussion started by: kraljic
6 Replies
3. UNIX Desktop Questions & Answers
I have a file of about 10k records and eace line is having an extra space of 5 byte at the end.. Iwant to remove the extra spaces at the end of each line.. Can someone please help me out.. I tried using sed command and its not working... can someone please help me out. (3 Replies)
Discussion started by: rammohan
3 Replies
4. Shell Programming and Scripting
Hi,
I am trying to remove lines once a string is found till another string is found including the start string and end string. I want to basically grab all the lines starting with color (closing bracket). PS: The line after the closing bracket for color could be anything (currently 'more').... (1 Reply)
Discussion started by: Dabheeruz
1 Replies
5. Shell Programming and Scripting
I have this:
301205 0000030000041.49000000.00 2011111815505 908
301205 0000020000029.10000000.00 2011111815505 962
301205 0000010000027.56000000.00 2011111815505 3083
312291 ... (2 Replies)
Discussion started by: herot
2 Replies
6. Shell Programming and Scripting
Is it possible to remove empty lines between >humid-sets (bold) and also humidset that start with -- (for ex: > humid3 | () : | (+) )
Thanx in advance
Note: The humid sets will be in thousands and lines will be more than 100 thousand.
input
> humid1 | () : | (+)... (7 Replies)
Discussion started by: quincyjones
7 Replies
7. Shell Programming and Scripting
I want to remove the trailing spaces at the end of each line starting from a particular position(using ksh script). For example, in the attached file, I want to remove all the spaces starting from the position 430 till the end. The space has to be removed only from the 430th position no matter in... (3 Replies)
Discussion started by: Suryaaravindh
3 Replies
8. Shell Programming and Scripting
Suppose, I have a variable var=" name is ".
I want to remove the blank spaces from the begining and endonly, not from the entire string.
So, that the variable/string looks like following
var="name is".
Please look after the issue. (3 Replies)
Discussion started by: mady135
3 Replies
9. Shell Programming and Scripting
child_amt=$amount
prev_line="$prev_line $child_amt"
i am getting the result like this
21234567890001343 000001004OLFXXX029100020091112 0000060
but i want 8 spaces between the eg:
21234567890001343 000001004OLFXXX029100020091112 0000060
how can i do this in .ksh (1 Reply)
Discussion started by: kshuser
1 Replies
10. UNIX for Dummies Questions & Answers
Hi,
I have a problem where I need to append few spaces(say 10 spaces) for each line in a file whose length is say(100 chars) and others leave as it is.
I tried to find the length of each line and then if the length is say 100 chars then tried to write those lines into another file and use a sed... (17 Replies)
Discussion started by: prathima
17 Replies
SED(1) General Commands Manual SED(1)
NAME
sed - stream editor
SYNOPSIS
sed [ -n ] [ -g ] [ -e script ] [ -f sfile ] [ file ... ]
DESCRIPTION
Sed copies the named files (standard input default) to the standard output, edited according to a script of commands. The -f option causes
the script to be taken from file sfile; these options accumulate. If there is just one -e option and no -f's, the flag -e may be omitted.
The -n option suppresses the default output; -g causes all substitutions to be global, as if suffixed g.
A script consists of editing commands, one per line, of the following form:
[address [, address] ] function [argument ...]
In normal operation sed cyclically copies a line of input into a pattern space (unless there is something left after a command), applies in
sequence all commands whose addresses select that pattern space, and at the end of the script copies the pattern space to the standard out-
put (except under -n) and deletes the pattern space.
An address is either a decimal number that counts input lines cumulatively across files, a that addresses the last line of input, or a con-
text address, /regular-expression/, in the style of regexp(6), with the added convention that matches a newline embedded in the pattern
space.
A command line with no addresses selects every pattern space.
A command line with one address selects each pattern space that matches the address.
A command line with two addresses selects the inclusive range from the first pattern space that matches the first address through the next
pattern space that matches the second. (If the second address is a number less than or equal to the line number first selected, only one
line is selected.) Thereafter the process is repeated, looking again for the first address.
Editing commands can be applied to non-selected pattern spaces by use of the negation function (below).
An argument denoted text consists of one or more lines, all but the last of which end with to hide the newline. Backslashes in text are
treated like backslashes in the replacement string of an command, and may be used to protect initial blanks and tabs against the stripping
that is done on every script line.
An argument denoted rfile or wfile must terminate the command line and must be preceded by exactly one blank. Each wfile is created before
processing begins. There can be at most 120 distinct wfile arguments.
a
text Append. Place text on the output before reading the next input line.
b label Branch to the : command bearing the label. If label is empty, branch to the end of the script.
c
text Change. Delete the pattern space. With 0 or 1 address or at the end of a 2-address range, place text on the output. Start
the next cycle.
d Delete the pattern space. Start the next cycle.
D Delete the initial segment of the pattern space through the first newline. Start the next cycle.
g Replace the contents of the pattern space by the contents of the hold space.
G Append the contents of the hold space to the pattern space.
h Replace the contents of the hold space by the contents of the pattern space.
H Append the contents of the pattern space to the hold space.
i
text Insert. Place text on the standard output.
n Copy the pattern space to the standard output. Replace the pattern space with the next line of input.
N Append the next line of input to the pattern space with an embedded newline. (The current line number changes.)
p Print. Copy the pattern space to the standard output.
P Copy the initial segment of the pattern space through the first newline to the standard output.
q Quit. Branch to the end of the script. Do not start a new cycle.
r rfile Read the contents of rfile. Place them on the output before reading the next input line.
s/regular-expression/replacement/flags
Substitute the replacement string for instances of the regular-expression in the pattern space. Any character may be used
instead of For a fuller description see regexp(6). Flags is zero or more of
g Global. Substitute for all non-overlapping instances of the regular expression rather than just the first one.
p Print the pattern space if a replacement was made.
w wfile
Write. Append the pattern space to wfile if a replacement was made.
t label Test. Branch to the command bearing the label if any substitutions have been made since the most recent reading of an input
line or execution of a If label is empty, branch to the end of the script.
w wfile
Write. Append the pattern space to wfile.
x Exchange the contents of the pattern and hold spaces.
y/string1/string2/
Transform. Replace all occurrences of characters in string1 with the corresponding character in string2. The lengths of
string1 and string2 must be equal.
!function Don't. Apply the function (or group, if function is only to lines not selected by the address(es).
: label This command does nothing; it bears a label for b and t commands to branch to.
= Place the current line number on the standard output as a line.
{ Execute the following commands through a matching only when the pattern space is selected.
An empty command is ignored.
EXAMPLES
sed 10q file
Print the first 10 lines of the file.
sed '/^$/d'
Delete empty lines from standard input.
sed 's/UNIX/& system/g'
Replace every instance of by
sed 's/ *$// drop trailing blanks
/^$/d drop empty lines
s/ */ replace blanks by newlines
/g
/^$/d' chapter*
Print the files chapter1, chapter2, etc. one word to a line.
nroff -ms manuscript | sed '
${
/^$/p if last line of file is empty, print it
}
//N if current line is empty, append next line
/^
$/D' if two lines are empty, delete the first
Delete all but one of each group of empty lines from a formatted manuscript.
SOURCE
/sys/src/cmd/sed.c
SEE ALSO
ed(1), grep(1), awk(1), lex(1), sam(1), regexp(6)
L. E. McMahon, `SED -- A Non-interactive Text Editor', Unix Research System Programmer's Manual, Volume 2.
BUGS
If input is from a pipe, buffering may consume characters beyond a line on which a command is executed.
SED(1)