10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
File lalo.txt contains: Á
I need to replace Á by A using sed command.
od -x lalo.txt
0000000 c10a
0000002
sed -e 's/\xc1\x0a/A/g' lalo.txt > lalo2.txt
Also tried:
sed -e 's/\xc3\x81/A/g' lalo.txt > lalo2.txt
Output file lalo2.txt still has Á
Unix version: SunOS 5.11 ... (9 Replies)
Discussion started by: mrreds
9 Replies
2. Shell Programming and Scripting
Hi,
I have a file with hundreds of lines. I want to search for particular lines starting with 4000, search and replace the 137-139 position characters; which will be '000', with '036'. Can all of this be done without opening a temp file and then moving that temp file to the original file name.
... (7 Replies)
Discussion started by: dsid
7 Replies
3. Shell Programming and Scripting
Have Pipe Delimited File:
> BRYAN BAKER|4/4/2015|518 VIRGINIA AVE|TEST
> JOE BAXTER|3/30/2015|2233 MockingBird RD|ROW2On 3rd column where the address is located, I want to add a space after every numeric value - basically doing a "s//&\ / ":
> BRYAN BAKER|4/4/2015|5 1 8 VIRGINIA AVE|TEST
> JOE... (5 Replies)
Discussion started by: svn
5 Replies
4. Shell Programming and Scripting
Assume I have a file \usr\home\\somedir\myfile123.txt
and I want to replace all occurencies of the two (concatenated) hex values x'AD' x'A0' bytwo other (concatenated) hex values x'20' x'6E'
How can I achieve this with the gnu sed tool?
Additional question: Is there a way to let sed show... (1 Reply)
Discussion started by: pstein
1 Replies
5. Shell Programming and Scripting
I need to be able to search for a string in the first column and if that string exists than replace the nth column with "-9.99".
AW12000012012 2.38 1.51 3.01 1.66 0.90 0.91 1.22 0.82 0.57 1.67 2.31 3.63 0.00
AW12000012013 1.52 0.90 1.20 1.34 1.21 0.67 ... (14 Replies)
Discussion started by: ncwxpanther
14 Replies
6. Shell Programming and Scripting
Hi,
I need a shell script, which would search the result values from another files.
1)execute " select column1 from table_name" query on the table.
2)Based on the result, need to be grep from .wft files.
could please explain about this.Below is the way i am using.
#!/bin/sh... (4 Replies)
Discussion started by: Rami Reddy
4 Replies
7. UNIX for Advanced & Expert Users
Hi,
i want to search and replace array values by using perl
perl -pi -e "s/${d$i]}/${b$j]}" *.xml
i am using while loop for the same. if i excute this,it shows "Substitution replacement not terminated at -e line 1.".
please tell me what's wrong this line (1 Reply)
Discussion started by: arindam guha
1 Replies
8. Shell Programming and Scripting
Hi,
Can anyone help me to search for multiple strings within specified position and replace with respective string value.
For example I need to search the string from the position 11 to 20 and if it contain ABC and then replace it by BCDEFGHIJ ... find AABZSDJIK and replace with QWE. and... (4 Replies)
Discussion started by: zooby
4 Replies
9. Programming
I have a set of files without extensions. How can I programatically tell if a file is in gzip format? The gzip file format spec
RFC 1952 GZIP File Format Specification version 4.3
states that gzip files have certain hex/oct values at the beginning of the file.
1st byte = 0x1f in hex,... (2 Replies)
Discussion started by: daflore
2 Replies
10. Shell Programming and Scripting
hey guys,
I have a directory with about 600 files. I need to find a specific word inside a command and replace only that instance of the word in many files. For example, lets say I have a command called 'foo' in many files. One of the input arguments of the 'foo' call is 'bar'. The word 'bar'... (5 Replies)
Discussion started by: ksubrama
5 Replies
LEARN(1) General Commands Manual LEARN(1)
NAME
learn - computer aided instruction about UNIX
SYNOPSIS
learn [ -directory ] [ subject [ lesson ] ]
DESCRIPTION
Learn gives Computer Aided Instruction courses and practice in the use of UNIX, the C Shell, and the Berkeley text editors. To get started
simply type learn. If you had used learn before and left your last session without completing a subject, the program will use information
in $HOME/.learnrc to start you up in the same place you left off. Your first time through, learn will ask questions to find out what you
want to do. Some questions may be bypassed by naming a subject, and more yet by naming a lesson. You may enter the lesson as a number
that learn gave you in a previous session. If you do not know the lesson number, you may enter the lesson as a word, and learn will look
for the first lesson containing it. If the lesson is `-', learn prompts for each lesson; this is useful for debugging.
The subject's presently handled are
files
editor
vi
morefiles
macros
eqn
C
There are a few special commands. The command `bye' terminates a learn session and `where' tells you of your progress, with `where m'
telling you more. The command `again' re-displays the text of the lesson and `again lesson' lets you review lesson. There is no way for
learn to tell you the answers it expects in English, however, the command `hint' prints the last part of the lesson script used to evaluate
a response, while `hint m' prints the whole lesson script. This is useful for debugging lessons and might possibly give you an idea about
what it expects.
The -directory option allows one to exercise a script in a nonstandard place.
FILES
/usr/share/learn subtree for all dependent directories and files
/usr/tmp/pl* playpen directories
$HOME/.learnrc startup information
SEE ALSO
csh(1), ex(1)
B. W. Kernighan and M. E. Lesk, LEARN - Computer-Aided Instruction on UNIX
BUGS
The main strength of learn, that it asks the student to use the real UNIX, also makes possible baffling mistakes. It is helpful, espe-
cially for nonprogrammers, to have a UNIX initiate near at hand during the first sessions.
Occasionally lessons are incorrect, sometimes because the local version of a command operates in a non-standard way. Occasionally a lesson
script does not recognize all the different correct responses, in which case the `hint' command may be useful. Such lessons may be skipped
with the `skip' command, but it takes some sophistication to recognize the situation.
To find a lesson given as a word, learn does a simple fgrep(1) through the lessons. It is unclear whether this sort of subject indexing is
better than none.
Spawning a new shell is required for each of many user and internal functions.
The `vi' lessons are provided separately from the others. To use them see your system administrator.
7th Edition October 22, 1996 LEARN(1)