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Resize image in the wiki of GitHub using Markdown
...wiki). Additionally, I had to add one or two images inside of a table. The pipe character was giving me grief because of typical table formatting in markdown. Escaping the pipe inside a table cell is still valid: [[ http://url.to/img.png \| height=48px]].
– DanMad
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Backup/Restore a dockerized PostgreSQL database
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To save some space on disk you might want to pipe the dump to gzip: docker exec -t your-db-container pg_dumpall -c -U postgres | gzip > /var/data/postgres/backups/dump_date +%d-%m-%Y"_"%H_%M_%S.gz
– Tarion
Oct 24 '16 at 16:08
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orderBy multiple fields in Angular
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Created Pipe for sorting. Accepts both string and array of strings, sorting by multiple values. Works for Angular (not AngularJS). Supports both sort for string and numbers.
@Pipe({name: 'orderBy'})
export class OrderBy implements P...
Is there a WebSocket client implemented for Python? [closed]
...nt how to handle the case when the server disconnects, as in i get broken pipe errors - writing to a closed pipe/socket/fd (probably the client disconnected) !!!
– Kanwal Prakash Singh
Apr 20 '16 at 8:54
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Bash history without line numbers
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Can we pipe in the output from the history command instead of reading the file?
– cwd
Aug 18 '11 at 15:45
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How can I select random files from a directory in bash?
...random sample of N files through using either a bash script or a list of piped commands?
12 Answers
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Removing colors from output
...|K] should probably be (m|K) or [mK], because you're not trying to match a pipe character. But that's not important right now.)
If you switch that final match in your command to [mGK] or (m|G|K), you should be able to catch that extra control sequence.
./somescript | sed -r "s/\x1B\[([0-9]{1,3}(;[...
Split output of command by columns using Bash?
...; done
will then output the 3rd column. As indicated in my comment...
A piped read will be executed in an environment that does not pass variables to the calling script.
out=$(ps whatever | { read a b c d; echo $c; })
arr=($(ps whatever | { read a b c d; echo $c $b; }))
echo ${arr[1]} # wil...
Is there a Unix utility to prepend timestamps to stdin?
...p awk adds will be the time that the end of the line appeared on its input pipe.
If awk shows errors, then try gawk instead.
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how to show lines in common (reverse diff)?
...mm -1 -2 file1.sorted file2.sorted
# where file1 and file2 are sorted and piped into *.sorted
Here's the full usage of comm:
comm [-1] [-2] [-3 ] file1 file2
-1 Suppress the output column of lines unique to file1.
-2 Suppress the output column of lines unique to file2.
-3 Suppress the output col...