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Shell Programming and Scripting
reversing multiple lines
Post 302359922 by vgersh99 on Wednesday 7th of October 2009 05:38:46 PM
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how can i reverse the line order in text files?
(but total number of the lines is not constant )
for example i have a file like this:
line1
line2
line3
.
.
lineN
i wantto make it like this:
lineN
.
.
.
line3 (26 Replies)
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Hello,
I have a some files that look like this:
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3 7
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0 3
0 3
1 5
2 8
3 7
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hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
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$ cat testing.txt
TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
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Hey guys. I know pratically 0 about Linux, so could anyone please give me instructions on how to accomplish this ?
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Hi,
Input
7488 7389 chr1.fa chr1.fa
3546 9887 chr5.fa chr9.fa
7387 7898 chrX.fa chr3.fa
7488 7389 chr21.fa chr3.fa
7488 7389 chr1.fa chr1.fa
3546 9887 chr9.fa chr5.fa
7898 7387 chrX.fa chr3.fa
Desired Output
7488 7389 chr1.fa chr1.fa 2
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LEARN ABOUT OPENSOLARIS
ucblinks
ucblinks(1B) SunOS/BSD Compatibility Package Commands ucblinks(1B) NAME
ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices SYNOPSIS
/usr/ucb/ucblinks [-e rulebase] [-r rootdir] DESCRIPTION
ucblinks creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi- ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry. ucblinks does not remove unneeded compatibility links; these must be removed by hand. ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been created, since the reconfiguration may have resulted in more compatibility names being needed. In releases prior to SunOS 5.4, ucblinks used a nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses nawk for the default operation, although nawk rule-bases can still be specifed with the -e option. The nawk rule-base equivalent to the SunOS 5.4 default operation can be found in /usr/ucblib/ucblinks.awk. OPTIONS
-e rulebase Specify rulebase as the file containing nawk(1) pattern-action statements. -r rootdir Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /. FILES
/usr/ucblib/ucblinks.awk sample rule-base for compatibility links ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5) SunOS 5.11 13 Apr 1994 ucblinks(1B)