Then the "tr"-command. This could be done inside sed too, yes? You want to change all space chars to newlines:
Replace "<spc>" with a literal space char and "^M" with <ENTER>. To enter special characters like the newline char press "<CTRL>-V" in vi before. The result will look like "^M" (one character), but in fact be a quoted newline.
To insert a newline with sed's s command, the newline needs to be preceded by a backslash.
In this case, a simple, global substitution of space with newline, it's easier to use the y command, which supports the \n sequence: y/ /\n/
A small nit: ^M is a carriage return character. ^J is newline/linefeed
Hi all you enlightened unix people,
I've been trying to execute a perl script that contains the following line within backticks:
`grep -f patternfile.txt otherfile.txt`;It takes normally 2 minutes to execute this command from the bash shell by hand.
I noticed that when i run this command... (2 Replies)
Hi,
A datafile containing lines such as below needs to be split:
500000000000932491683600000000000000000000000000016800000GS0000000000932491683600*HOME
I need to get the 2-5, 11-20, and 35-40 characters and I can do it via cut command.
cut -c 2-5 file > temp1.txt
cut -c 11-20 file >... (9 Replies)
I'm sorting files from a source directory by size into 4 categories then copying them into 4 corresponding folders, just wondering if there's a faster/better/more_elegant way to do this:
find /home/user/sourcefiles -type f -size -400000k -exec /bin/cp -uv {} /home/user/medfiles/ \;
find... (0 Replies)
we have 30 GB files on our filesystem which we need to copy daily to 25 location on the same machine (but different filesystem).
cp is taking 20 min to do the copy and we have 5 different thread doing the copy.
so in all its taking around 2 hr and we need to reduce it.
Is there any... (9 Replies)
Hi,
I have a script below for extracting xml from a file.
for i in *.txt
do
echo $i
awk '/<.*/ , /.*<\/.*>/' "$i" | tr -d '\n'
echo -ne '\n'
done
.
I read about using multi threading to speed up the script.
I do not know much about it but read it on this forum.
Is it a... (21 Replies)
awk "/May 23, 2012 /,0" /var/tmp/datafile
the above command pulls out information in the datafile. the information it pulls is from the date specified to the end of the file.
now, how can i make this faster if the datafile is huge? even if it wasn't huge, i feel there's a better/faster way to... (8 Replies)
Hi Experts,
I am using this command to edit the file contents and also add the header to the existing file.
I prepared this command on my VM (Linux) and it worked as I wanted it to work. But on solaris its not working :(. Please help as it is quite urgent.
sample File:
a
b
Output... (5 Replies)
I have the below command which is referring a large file and it is taking 3 hours to run. Can something be done to make this command faster.
awk -F ',' '{OFS=","}{ if ($13 == "9999") print $1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12 }' ${NLAP_TEMP}/hist1.out|sort -T ${NLAP_TEMP} |uniq>... (13 Replies)
Discussion started by: Peu Mukherjee
13 Replies
LEARN ABOUT MOJAVE
vis
VIS(1) BSD General Commands Manual VIS(1)NAME
vis -- display non-printable characters in a visual format
SYNOPSIS
vis [-cbflnostw] [-F foldwidth] [file ...]
DESCRIPTION
The vis utility is a filter for converting non-printable characters into a visual representation. It differs from 'cat -v' in that the form
is unique and invertible. By default, all non-graphic characters except space, tab, and newline are encoded. A detailed description of the
various visual formats is given in vis(3).
The options are as follows:
-b Turns off prepending of backslash before up-arrow control sequences and meta characters, and disables the doubling of backslashes.
This produces output which is neither invertible or precise, but does represent a minimum of change to the input. It is similar to
``cat -v''.
-c Request a format which displays a small subset of the non-printable characters using C-style backslash sequences.
-F Causes vis to fold output lines to foldwidth columns (default 80), like fold(1), except that a hidden newline sequence is used,
(which is removed when inverting the file back to its original form with unvis(1)). If the last character in the encoded file does
not end in a newline, a hidden newline sequence is appended to the output. This makes the output usable with various editors and
other utilities which typically do not work with partial lines.
-f Same as -F.
-l Mark newlines with the visible sequence '$', followed by the newline.
-n Turns off any encoding, except for the fact that backslashes are still doubled and hidden newline sequences inserted if -f or -F is
selected. When combined with the -f flag, vis becomes like an invertible version of the fold(1) utility. That is, the output can be
unfolded by running the output through unvis(1).
-o Request a format which displays non-printable characters as an octal number, ddd.
-s Only characters considered unsafe to send to a terminal are encoded. This flag allows backspace, bell, and carriage return in addi-
tion to the default space, tab and newline.
-t Tabs are also encoded.
-w White space (space-tab-newline) is also encoded.
SEE ALSO unvis(1), vis(3)HISTORY
The vis command appeared in 4.4BSD.
BUGS
Due to limitations in the underlying vis(3) function, the vis utility does not recognize multibyte characters, and thus may consider them to
be non-printable when they are in fact printable (and vice versa).
BSD June 25, 2004 BSD