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Just a learner
  • Member for 13 years
  • Last seen more than a month ago
17 votes
9 answers
4k views

How to process an x-column text file to get a y-column one?

13 votes
5 answers
24k views

How to refer to a regex group in awk regex?

8 votes
4 answers
4k views

Is there a command can do the reverse of what the paste command does?

7 votes
2 answers
28k views

Ubuntu 14 server edition, how to boot into single-user mode?

7 votes
2 answers
309 views

Where does the last newline character come from in this sed's result?

6 votes
1 answer
342 views

How to benchmark different text processing commands and find out the fastest?

5 votes
1 answer
12k views

In awk, how can I make a boolean value that I can toggle it?

5 votes
2 answers
8k views

wget download files from a file list, how to specify names for each of the downloaded file?

4 votes
2 answers
13k views

What's the differences between ifdown and "ip link set .. .down"?

4 votes
2 answers
507 views

Is there a way to count the number of lines of text in a file including non-delimited ones?

4 votes
0 answers
572 views

How to use awk-it in Emacs?

4 votes
2 answers
7k views

Awk inplace option with print statement

4 votes
4 answers
334 views

How to merge lines with fixed interval in a file?

4 votes
3 answers
4k views

Gnu sed, will the p command appends a newline when printing?

4 votes
3 answers
2k views

How to use awk to extract data from a file based on the content of another file?

3 votes
3 answers
2k views

How to restrict awk number of fields?

3 votes
0 answers
1k views

VMware Workstation guests NAT adapters always got the same IP address

3 votes
2 answers
857 views

What does it mean for a folder to have suid permission? [duplicate]

3 votes
1 answer
590 views

The "join" utility reports: file is not sorted, but in fact it is sorted

3 votes
2 answers
867 views

How to replace the leading tab (including tabs after some space characters) only?

2 votes
3 answers
3k views

Why my colors doesn't show in all terminals?

2 votes
2 answers
693 views

/usr/bin/truncate: Argument list too long

2 votes
0 answers
252 views

Why the user root doesn't have "w" permission of its home directory?

2 votes
1 answer
3k views

How to use the w command of sed and write to file?

2 votes
1 answer
388 views

Run sed without -n, will the d command skip the default auto print pattern space content?

2 votes
1 answer
123 views

How to use the a and i command in Gnu sed to add a newline character using \n?

2 votes
1 answer
961 views

How to check xargs's version?

2 votes
1 answer
124 views

How can I run a shell command without being added in history? [duplicate]

2 votes
1 answer
4k views

What does it mean by gpg encrypting a file with multiple recipients?

1 vote
1 answer
670 views

KVM guest machine graphics problem