04-09-2012
It would help to see a sample of your input, especially since printable characters and control characters cover pretty much everything that might be in the input. It would also help to know what you are attempting to accomplish.
This User Gave Thanks to agama For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
does anyone know how to combine 2 lines? this is what im playing around with.
(filename: online, user name: prml0001, real name: primal)
#!/bin/sh
who | grep $1 > /dev/null
if
then
grep $1 /etc/passwd | cut -f 5, -d :
echo is logged on
exit 0
else
grep $1... (13 Replies)
Discussion started by: primal
13 Replies
2. UNIX for Dummies Questions & Answers
how do i search for the phrase "expected" on line one and
"received" on line two. (there is a newline in between the two)
I would like to know if/how this can be done in perl and/or
grep and/or sed (3 Replies)
Discussion started by: artjaniger
3 Replies
3. UNIX for Dummies Questions & Answers
hi..im new to UNIX...
ok i have this information in the normal shell...
there are 2 lines display like this:
h@hotmail.com
k@hotmail.com
i want it to display like this with a space betweem them
h@hotmail.com k@hotmail.com
the information is stored in a text file....
anyone... (10 Replies)
Discussion started by: forevercalz
10 Replies
4. Shell Programming and Scripting
I am a beginner at shell scripting, actually i am working on my first script right now.
Anyway i have searched the world how to grep two letters from each word (it will always just be two words).
For example:
Example Blablabla
I want my script to cut out Ex (from the first word) and Bl... (4 Replies)
Discussion started by: maskot
4 Replies
5. Shell Programming and Scripting
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
Discussion started by: cbo0485
1 Replies
6. UNIX for Dummies Questions & Answers
Hi all,
What is the sed command use to combine line?
Example:
Below is an output after extracted from few commands
aaa
bbb
ccc
ddd
eee
fff
ggg
and i would like to combine all the line as shown below,
aaa,bbb,ccc,ddd,eee,fff (5 Replies)
Discussion started by: 793589
5 Replies
7. Shell Programming and Scripting
hi all
I have two files
file1
aaa
bbb
ccc
ddd
file2
111
222
333
444
I would like to using "SED" combine two files together
Please help
Thank all (3 Replies)
Discussion started by: yuesko
3 Replies
8. UNIX for Dummies Questions & Answers
Would like to convert it to one line
sed -i -e '/./,$!d' term1.txt
sed -i '2d' term1.txt
sed -i '/^$/Q' term1.txt
cat term1.txt>> test1.txt
Appreciate if someone could point out the error
sed -i -e '/./,$!d' -e '2d' -e '/^$/Q' term1.txt
cat term1.txt>> $test1.txt
... (6 Replies)
Discussion started by: w020637
6 Replies
9. Shell Programming and Scripting
im currently running the following command to grab all arguments in front of a script, directly from the process table.
# cat /tmp/allmyprocs
ubuntu 9933 27793 0 03:29 pts/0 00:00:00 /bin/sh ./prying.sh
ubuntu 9941 9933 0 03:29 pts/0 00:00:00 sh
ubuntu 9952 9941 0 03:29... (1 Reply)
Discussion started by: SkySmart
1 Replies
10. UNIX for Beginners Questions & Answers
In the awk piped to sed below I am trying to format file by removing the odd xxxx_digits and whitespace after, then move the even xxxx_digit to the line above it and add a space between them. There may be multiple lines in file but they are in the same format. The Filename_ID line is the last line... (4 Replies)
Discussion started by: cmccabe
4 Replies
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