Commands tagged stderr sorted by votes

Commands tagged stderr (9)

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intercept stdout/stderr of another process
This is sample output - yours may be different.
59

strace -ff -e trace=write -e write=1,2 -p SOME_PID

oernii2 · 2010-04-20 08:55:54 11
stderr in color

in case you run some command in CLI and would like to take read strerr little bit better, you can use the following command. It's also possible to grep it if necessary....
This is sample output - yours may be different.
19

mycommand 2> >(while read line; do echo -e "\e[01;31m$line\e[0m"; done)

confiq · 2010-12-30 21:42:42 19
intercept stdout/stderr of another process

similar to the previous command, but with more friendly output (tested on linux)
This is sample output - yours may be different.
10

strace -ff -e write=1,2 -s 1024 -p PID 2>&1 | grep "^ |" | cut -c11-60 | sed -e 's/ //g' | xxd -r -p

systemj · 2010-04-23 16:22:17 4
Setting global redirection of STDERR to STDOUT in a script

You have a script where =ALL= STDERR should be redirected to STDIN and you don't want to add "2>&1" at the end of each command... E.G.: ls -al /foo/bar 2>&1 Than just add this piece of code at the beginning of your script! I hope this can help someone. :)
This is sample output - yours may be different.
9

exec 2>&1

morgents · 2010-08-05 08:24:18 6
intercept stdout/stderr of another process or disowned process

Useful to recover a output(stdout and stderr) "disown"ed or "nohup"ep process of other instance of ssh. With the others options the stdout / stderr is intercepted, but only the first n chars. This way we can recover ALL text of stdout or stderr Show Sample Output
This is sample output - yours may be different.
```
{ i=0; while sleep 1; do echo -e "writing a long line to stdout 1 [AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA] 2 [BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB] 3 [CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC] \nline2 == var i=$((i++))";done; } > /dev/null & PID=$!
```
3

strace -e write=1,2 -p $PID 2>&1 | sed -un "/^ |/p" | sed -ue "s/^.\{9\}$.\{50\}$.\+/\1/g" -e 's/ //g' | xxd -r -p

glaudiston · 2010-10-06 19:37:39 4
used like `echo`, but outputs to stderr instead of stdout

Like what it says. Show Sample Output
This is sample output - yours may be different.
```
ctl@selector:~$ ( echo hello && errcho herrorllo && echo hello again ) > greetings.out; date; cat greetings.out
herrorllo
Fri Mar  4 21:51:33 GMT 2016
hello
hello again
```
0

alias errcho='>&2 echo'

incidentnormal · 2016-03-04 21:52:56 12
sort of automaticly install gems that are depend

When bundle install sucks ...This runs isuckat_ruby.rb and when stderror matches find gem ' it will gem install what ever is missing ... Show Sample Output
This is sample output - yours may be different.
```
Could not find gem 'metasploit-payloads (= 1.1.13) ruby', which is required by gem 'metasploit-framework (>= 0) ruby', in any of the sources.
```
0

gem install `ruby ./isuckat_ruby.rb 2>&1 | sed -e 's/.*find gem .//g' -e 's/ .*//g' | head -n 1`

operat0r · 2016-08-03 19:41:27 13
close stderr
This is sample output - yours may be different.
-3

cat aaaaaa 2>&-

totti · 2011-09-14 20:55:26 3
Redirecting stderr to file
This is sample output - yours may be different.
-4

<command> 2> <file>

mariusbutuc · 2011-02-14 14:48:11 3

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Retry the previous command until it exits successfully

Change every instance of OLD to NEW in file FILE

Very quick way to change a word in a file. I use it all the time to change variable names in my PHP scripts (sed -i 's/$oldvar/$newvar/g' index.php)

Get the list of root nameservers for a given TLD

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Hide files in ls, by adding support for .hidden files!

Sometimes I would like to see hidden files, prefix with a period, but some files or folders I never want to see (and really wish I could just remove all together).

shuffle lines via perl

Same, without modules... Probably smarter option: just use the shuf command or even sort -R.

Debug SSH at the Maximum Verbosity Level

When debugging an ssh connection either to optimize your settings ie compression, ciphers, or more commonly for debugging an issue connecting, this alias comes in real handy as it's not easy to remember the '-o LogLevel=DEBUG3' argument, which adds a boost of debugging info not available with -vvv alone. Especially useful are the FD info, and the setup negotiation to create a cleaner, faster connection.

Mirror rubygems.org

https://github.com/rubygems/rubygems-mirror/issues/20

Create a file of a given size in linux

if the fs support sparse file,using truncate can create sparse file. http://en.wikipedia.org/wiki/Sparse_file

Convert seconds to [DD:][HH:]MM:SS

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Commands tagged stderr (9)

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