Questions tagged [tr]
The tr tag has no usage guidance.
21
questions
0
votes
2
answers
1k
views
why can't I remove spaces using tr -s
when I enter the following
echo "This is for testing" | tr -s [:space:]
I get this...
This is for testing
I was hoping to remove the multiple spaces and just have one space ...
- 71
0
votes
1
answer
108
views
Trying to create a file to meet three conditions
I need to make a file that lists the first 5 lines of the /sbin directory, with having all 5 lines numbered AND all lines capitalized.
Here is one string of commands that I tried:
tr [a-z] [A-Z] < ...
- 27
0
votes
1
answer
812
views
How to replace every 2nd line sed
How to replace every 2nd line of a text file with another text file list of lines.
Example:
cat filea.txt
I love Pink
I love Blue
I love Dogs
I love MOMO
cat bileb.txt
I hate yello
I hate white
I ...
- 11
2
votes
2
answers
1k
views
Why does tr "\oo" " " not replace the "\" character?
I ran echo "\oo" | tr "\oo" " ", and the output is:
\
\o is not a special character, like \n, so why is the \ not converted into a space too?
- 660
1
vote
3
answers
1k
views
delete empty lines
I could need some help with a oneline script im building. The script should give me a list of services, which are running on the current system. I wanted to realize this with systemctl.
The current ...
- 13
2
votes
2
answers
1k
views
How to split string in TSV file
I have TSV file like this:
abc_1
def_2
ghi_3
jkl_4
mno_5
I want to split that in to the:
abc
def
ghi
jkl
mno
and
1
2
3
4
5
How I can get that?
2
votes
1
answer
2k
views
How can I use tr command using more than 2 arguments?
I want to replace a-l letters with m-z letters and m-z characters with a-l in text file using tr command. (a is replaced with m, b with n, c with o, m with a, b with n, etc.) I tried `tr a-l m-z | tr ...
- 23
0
votes
0
answers
703
views
How can I remove null and ctrl+m characters from a CSV file?
I have a CSV file that starts with NULL bytes that come from Hive Beeline CLI query output. The file starts with many lines that have ^Mnull^Mnull in the first lines:
^Mnull ...
- 131
9
votes
4
answers
5k
views
How would you separate fields with multiple spaces and store them in an array?
In my file mytxt:
field1 field2
------ -------
this are numbers 12345
this letters abc def ghi
Let's say I want to store the first field ...
- 101
1
vote
1
answer
106
views
Change characters to lowercase
I am trying to make all values in the 11th column of my .csv file lowercase. I know I can use 'tr A-Z a-z' but how do I make sure it is working in the file I want and only on the 11th column.
2
votes
3
answers
595
views
CSV to TSV without replacing commas within quotes
All the CSV to TSV tutorials are suggesting a simple:
tr ',' '\t'
though some CSVs look like this:
1,310,"IntAct,PINA"
in which case I would like to keep "IntAct,PINA":
1 310 "IntAct,PINA"
How ...
- 329
7
votes
1
answer
6k
views
tr: command not found
I'm using Ubuntu 18.04, and recently I keep getting this error when running bash scripts: tr: command not found. The tr does not exists in /usr/bin and /usr/sbin. Also installed coreutils but still no ...
0
votes
0
answers
203
views
Condition on the output to xterm of a variable that has been echo'ed in color
The fourth line of this code outputs the input argument in green color to an xterm.
However, I'd like to be able to condition on the value of the input.
If I input the word Foo then from bash's ...
- 1,519
1
vote
1
answer
665
views
Using the tr command with character ranges
For the past few months, I've been learning about the command line with the help of William E. Shotts' The Linux Command Line.
The Linux Command Line remains a popular book for newbies who would like ...
1
vote
3
answers
3k
views
Remove Control Return and merge lines in one text file and limit number of characters
I wan to remove Control Return and merge lines in one text file and limit number of characters
input.txt containing:
comment 1
comment 2
...
comment n
output.txt should one strings:
comment 1 ...
- 107
0
votes
1
answer
77
views
Testing the limits of the tr command using character ranges
I'm trying to test the limits of the tr command using character ranges. What I don't get is how come I get the output:
lowercase letters
when typing:
echo "lowercase letters" | tr A-Z A-Z
instead ...
10
votes
2
answers
6k
views
How does tr translate one word to another?
I have a file ma.txt and it contains the output of ls -l; when I run the tr command (tr "nik-pc" "root") I get this output:
nik-pc@nik:~$ cat ma.txt
total 52
drwxr-xr-x 2 nik-pc nik-pc 4096 Mar 11 ...
- 341
1
vote
1
answer
70
views
Ubuntu Server 14.04.3 update problems
using Ubuntu Server 14.04.3. apt-update & upgrade stuck on tr.archive.ubuntu.com
It's responding so slow and can't download packages.
4
votes
3
answers
3k
views
How I can count how many repeated numbers in a file and then organize them by repetitions?
I have a file that needs organized a number of repeats, my file has 6 rows and 3120 lines each member has 1 or 2 digits, total 18720 numbers with one or 2 digits.
I would like to count how many 1, ...
- 171
2
votes
2
answers
4k
views
Looping tr command to remove '\r' in multiple files in a directory
I have about 260 files in a directory. How can I input these files one by one into some thing like this
file is an array name
file=input stream of multiple files
x=0
LOOP
tr -d '\r' file2
rm $file
...
- 995
9
votes
2
answers
39k
views
How can I add a backslash before all spaces?
How can I put a backslash before every space, preferably by using tr or sed commands?
Here is my script:
#!/bin/bash
line="hello bye"
echo $line | tr ' ' "\\\ "
This is supposed to replace spaces ...
- 1,295