But it doesn't take the plus or minus sign into consideration.
Moderator's Comments:
You didn't answer the first two questions I asked at all. And, the real answer to the third question appears to be that you did not make any attempt to solve this problem on your own. The code you found on your online search does not meet any of your requirements and you clearly did not make any attempt to solve this problem using what you had learned from the help you have been provided in this forum for almost five years.
You have asked 140 questions and gotten answers to 139 of them that were intended to help you learn how to use the shell, awk, and other tools; but instead of trying to learn anything about how to write your own code, you seem to think of The UNIX & Linux Forums as your unpaid programming staff despite being warned that you would be banned if you continued this behavior.
Hi all
how can can remove the underscore from this number in this series
_1234567.abc
_1234567.abcd
I was trying mv _1234567* 1234567
but did not work ?
thanks
s (2 Replies)
hi,
im doin an assignment which requires you to build a shell script to do the MS DOS style equivilant (sp?) of the rename function. What i have to do is a loop which checks the following rules and output messages (same):
Can't have anything after target
Can't have more than one dot
Can't... (1 Reply)
hi guys i am writing a script to change the filename which is enterered as input to lower case letter even if one letter is upper case i have to change it to lower case
i get the input and use
sed comand should i use like that
sed/s/a-z/A-Z/d
will it be like that can u please help me (8 Replies)
Hi!
Please see our current script:
#!/usr/bin/ksh
if (egrep "This string is found in the log" /a01/bpm.log)
then
mailx -s "Error from log" me@email.com, him@email.com </a01/bpm.log
fi
To the above existing script, we need to add the following change:
1) After finding the string,... (7 Replies)
Executed the following if conditions .. and got different results .
only (( )) gave correct o/p with all scenarios .
Can anybody please let me know what is the difference between and ] and ((condition)) when used with if condition.
And why each condition gave different result.
1.... (2 Replies)
hi,
I have some problems in my simple script about the redirect echo stdout command inside a condition. Why is the echo command inside the elif still execute in the else command
Here are my simple script
After check on the two diff output the echo stdout redirect is present in two diff... (3 Replies)
HI
My doubt may be basic one but I need to get it clarified..
When i use "if" condition that checks for many AND, OR logical conditions
like
if ]; then
return 0
fi
Even the if condition fails it returns as zero.. Any clue..
But if i add else condition like
if ]; ... (2 Replies)
I want to rename files
Files show like this
1977SSD_rsdtst.pdf
1976SDP_rstdtsr.pdf
1943FDT_rstdsrt.pdf
1996DFF_stdstrd.pdf
I want to introduce _ after the year, and move the characters to the end
to get
1977_rsdtst_SSD.pdf
1976_rstdtsr_SDP.pdf
1943_rstdsrt_FDT.pdf... (4 Replies)
Renaming files using rename on the following files
rename 's/.99999/.99999.sac.pzs/g' *.99999
sac_pzs_iv_esml_hhz__2013.074.10.18.23.0000_2599.365.23.59.59.99999
sac_pzs_iv_favr_hhe__2010.187.00.00.00.0000_2599.365.23.59.59.99999... (1 Reply)
Discussion started by: kristinu
1 Replies
LEARN ABOUT BSD
learn
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)