add header command

[avilella]

Would it be possible to have an add header(s) command to csvtk, if there isn't an easy way to do it yet?

E.g.

cat file.csv
1
2
3
4

csvtk add-header -f 1:myheader file.csv
myheader
1
2
3
4

Thanks in advance for considering. I wanted a more elegant way than the following for 1-column files:

{ echo myheader ; cat file.csv ; }

[shenwei356]

Ok, I need this too

[shenwei356]

Added:

• csvtk_darwin_amd64.tar.gz
• csvtk_linux_amd64.tar.gz
• csvtk_windows_amd64.exe.tar.gz

Examples:

$ seq 3 | csvtk mutate -H | csvtk add-header -n a,b
a,b
1,1
2,2
3,3

$ seq 3 | csvtk mutate -H -t | csvtk add-header -t -n a,b
a       b
1       1
2       2
3       3

[shenwei356]

csvtk del-header is added too, you can also use sed 1d in *nix.

Adding a global option to disable outputting header line is an optional way, but it need to change all codes of commands, so I just add a new command to to this.

• csvtk_darwin_amd64.tar.gz
• csvtk_linux_amd64.tar.gz
• csvtk_windows_amd64.exe.tar.gz

$ seq 3 | csvtk mutate -H | csvtk add-header -n a,b | csvtk del-header 
1,1
2,2
3,3