cat: write error: Bad address 2

[BIS]

Anybody knows what this means?

 

[mrregan]

Hi,
Are you trying to cat from the file and output to the file at the same time by any chance?

 

[BIS]

...well yes:

cat /path/to/file.txt | tr -d '\n' > /path/to/file.txt

I thought this was OK. Funny thing is it works sometimes...

 

[jamisar]

man cat
a) you are overwriting the same file
cat FILE | do something >FILE

b) please stop using stupid commands like
cat | grep | tr and so on
tr -d '\n' filname >Nfilename
(((((((

-----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !

 

[BIS]

jamisar,

many thanks - I am just starting so bear with me....

A quick question, can I do more tr in the same line?

For example, tr -d '\n' and tr -d ' ' ?

 

[jamisar]

in 'man tr' you will find

tr -d '[:space:]'
-----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !

 

[BIS]

hmm, why does this not work?

tr -d 'sum' file1 > file2

file1:
one,two,sum,three

I thought it would delete the 'sum' part leaving only

one,two,three in file2

 

[mrregan]

Hi,
It works for me tr -d 'sum' < file1 > file2
the string sum is removed leaving a string of
one,two,,three in file2. (note the comma was not removed).

 

[BIS]

mrregan,

it was the < I had forgotten - many thanks...

 

[KenCunningham]

I see Jamisar's as full of the Christmas spirit as ever! ;-)

 

[MikeLacey]

Hmmm <grin> Mike

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