awk function with a number parameter for the column you want to print
I want to use my awk shortcut as a function, so that I can pass the column number which then prints me the output. My aliases are:
alias A="| awk '{print $1}'
alias G="| grep -i'
Instad of typing:
ps -ef | grep mysql | awk 'print $2'
I want to be able to type this:
ps -ef G mysql A 2
Any suggestions?
shell alias function
edited Aug 23 '16 at 13:14
John Militer
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
add a comment |
I want to use my awk shortcut as a function, so that I can pass the column number which then prints me the output. My aliases are:
alias A="| awk '{print $1}'
alias G="| grep -i'
Instad of typing:
ps -ef | grep mysql | awk 'print $2'
I want to be able to type this:
ps -ef G mysql A 2
Any suggestions?
shell alias function
edited Aug 23 '16 at 13:14
John Militer
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
4
For a completely different approach, trypgrep -f mysql(assumingpgrepis available).
– jw013
Jul 27 '12 at 17:04
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
Indeed. And for arbitrary fields,ps -o <field> $(pgrep mysql).
– Mikel
Jul 27 '12 at 17:22
1
orps h -o %p -C mysqldif you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g.ps h -o %p -C mysqld -C mysqlto get client and server processes.
– cas
Jul 27 '12 at 21:06
add a comment |
I want to use my awk shortcut as a function, so that I can pass the column number which then prints me the output. My aliases are:
alias A="| awk '{print $1}'
alias G="| grep -i'
Instad of typing:
ps -ef | grep mysql | awk 'print $2'
I want to be able to type this:
ps -ef G mysql A 2
Any suggestions?
shell alias function
edited Aug 23 '16 at 13:14
John Militer
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
I want to use my awk shortcut as a function, so that I can pass the column number which then prints me the output. My aliases are:
alias A="| awk '{print $1}'
alias G="| grep -i'
Instad of typing:
ps -ef | grep mysql | awk 'print $2'
I want to be able to type this:
ps -ef G mysql A 2
Any suggestions?
shell alias function
shell alias function
edited Aug 23 '16 at 13:14
John Militer
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
edited Aug 23 '16 at 13:14
John Militer
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
edited Aug 23 '16 at 13:14
John Militer
6592928
edited Aug 23 '16 at 13:14
John Militer
6592928
edited Aug 23 '16 at 13:14
John Militer
6592928
6592928
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
asked Jul 27 '12 at 16:52
DannyReDannyRe
1114
1114
4
For a completely different approach, trypgrep -f mysql(assumingpgrepis available).
– jw013
Jul 27 '12 at 17:04
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
Indeed. And for arbitrary fields,ps -o <field> $(pgrep mysql).
– Mikel
Jul 27 '12 at 17:22
1
orps h -o %p -C mysqldif you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g.ps h -o %p -C mysqld -C mysqlto get client and server processes.
– cas
Jul 27 '12 at 21:06
add a comment |
4
For a completely different approach, trypgrep -f mysql(assumingpgrepis available).
– jw013
Jul 27 '12 at 17:04
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
Indeed. And for arbitrary fields,ps -o <field> $(pgrep mysql).
– Mikel
Jul 27 '12 at 17:22
1
orps h -o %p -C mysqldif you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g.ps h -o %p -C mysqld -C mysqlto get client and server processes.
– cas
Jul 27 '12 at 21:06
4
4
For a completely different approach, try
pgrep -f mysql (assuming pgrep is available).– jw013
Jul 27 '12 at 17:04
For a completely different approach, try
pgrep -f mysql (assuming pgrep is available).– jw013
Jul 27 '12 at 17:04
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
Indeed. And for arbitrary fields,
ps -o <field> $(pgrep mysql).– Mikel
Jul 27 '12 at 17:22
Indeed. And for arbitrary fields,
ps -o <field> $(pgrep mysql).– Mikel
Jul 27 '12 at 17:22
1
1
or
ps h -o %p -C mysqld if you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g. ps h -o %p -C mysqld -C mysql to get client and server processes.– cas
Jul 27 '12 at 21:06
or
ps h -o %p -C mysqld if you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g. ps h -o %p -C mysqld -C mysql to get client and server processes.– cas
Jul 27 '12 at 21:06
add a comment |
2 Answers
2
active
oldest
votes
I don't think it's possible. Basically, aliases can't take arguments ($1), and functions can't do macro expansion (|).
The closest options I can think of:
in bash or zsh
C() { col=$1; shift; eval "awkcmd='{ print $$col }'"; echo "$awkcmd"; "$@" | awk "$awkcmd"; }
C 2 ps -ef G mysql
in zsh
alias -g F="| tr -s '[[:space:]]' | cut -d ' ' -f"
ps -ef G mysql F 2
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
add a comment |
Putting pipes into aliases is awkward. Instead, create a shell function that you can pipe things to:
G () {
grep -i "$@"
}
A () {
awk -v col="$1" '{ print $col }'
}
Then,
ps -ef | G mysql | A 2
But this particular pipeline would, on a Linux system, be more or less the same as
pgrep mysql
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I don't think it's possible. Basically, aliases can't take arguments ($1), and functions can't do macro expansion (|).
The closest options I can think of:
in bash or zsh
C() { col=$1; shift; eval "awkcmd='{ print $$col }'"; echo "$awkcmd"; "$@" | awk "$awkcmd"; }
C 2 ps -ef G mysql
in zsh
alias -g F="| tr -s '[[:space:]]' | cut -d ' ' -f"
ps -ef G mysql F 2
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
add a comment |
I don't think it's possible. Basically, aliases can't take arguments ($1), and functions can't do macro expansion (|).
The closest options I can think of:
in bash or zsh
C() { col=$1; shift; eval "awkcmd='{ print $$col }'"; echo "$awkcmd"; "$@" | awk "$awkcmd"; }
C 2 ps -ef G mysql
in zsh
alias -g F="| tr -s '[[:space:]]' | cut -d ' ' -f"
ps -ef G mysql F 2
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
add a comment |
I don't think it's possible. Basically, aliases can't take arguments ($1), and functions can't do macro expansion (|).
The closest options I can think of:
in bash or zsh
C() { col=$1; shift; eval "awkcmd='{ print $$col }'"; echo "$awkcmd"; "$@" | awk "$awkcmd"; }
C 2 ps -ef G mysql
in zsh
alias -g F="| tr -s '[[:space:]]' | cut -d ' ' -f"
ps -ef G mysql F 2
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
I don't think it's possible. Basically, aliases can't take arguments ($1), and functions can't do macro expansion (|).
The closest options I can think of:
in bash or zsh
C() { col=$1; shift; eval "awkcmd='{ print $$col }'"; echo "$awkcmd"; "$@" | awk "$awkcmd"; }
C 2 ps -ef G mysql
in zsh
alias -g F="| tr -s '[[:space:]]' | cut -d ' ' -f"
ps -ef G mysql F 2
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
answered Jul 27 '12 at 17:10
MikelMikel
40k10103127
40k10103127
add a comment |
add a comment |
Putting pipes into aliases is awkward. Instead, create a shell function that you can pipe things to:
G () {
grep -i "$@"
}
A () {
awk -v col="$1" '{ print $col }'
}
Then,
ps -ef | G mysql | A 2
But this particular pipeline would, on a Linux system, be more or less the same as
pgrep mysql
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
add a comment |
Putting pipes into aliases is awkward. Instead, create a shell function that you can pipe things to:
G () {
grep -i "$@"
}
A () {
awk -v col="$1" '{ print $col }'
}
Then,
ps -ef | G mysql | A 2
But this particular pipeline would, on a Linux system, be more or less the same as
pgrep mysql
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
add a comment |
Putting pipes into aliases is awkward. Instead, create a shell function that you can pipe things to:
G () {
grep -i "$@"
}
A () {
awk -v col="$1" '{ print $col }'
}
Then,
ps -ef | G mysql | A 2
But this particular pipeline would, on a Linux system, be more or less the same as
pgrep mysql
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
Putting pipes into aliases is awkward. Instead, create a shell function that you can pipe things to:
G () {
grep -i "$@"
}
A () {
awk -v col="$1" '{ print $col }'
}
Then,
ps -ef | G mysql | A 2
But this particular pipeline would, on a Linux system, be more or less the same as
pgrep mysql
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
answered Feb 28 at 20:57
KusalanandaKusalananda
137k17258426
137k17258426
add a comment |
add a comment |
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4
For a completely different approach, try
pgrep -f mysql(assumingpgrepis available).– jw013
Jul 27 '12 at 17:04
nice tool thx!!
– DannyRe
Jul 27 '12 at 17:13
Indeed. And for arbitrary fields,
ps -o <field> $(pgrep mysql).– Mikel
Jul 27 '12 at 17:22
1
or
ps h -o %p -C mysqldif you want the PIDs of a particular named process (-C is exact match, not search pattern or regexp). You can have multiple -C args, e.g.ps h -o %p -C mysqld -C mysqlto get client and server processes.– cas
Jul 27 '12 at 21:06